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Rabbi Haim & Esther

Rambam: One Page at a Time

Volume 1 · The Rambam and the Moon

Volume 1 · the comic’s first release

A fictional, artistic reconstruction. Every depiction of the Rambam and of the scenes in this comic is a fictional, artistic reconstruction: the drawings, the settings and the dialogue are imagined, not historical records.

This comic is available to read on www.tebeka.com only; it cannot be downloaded, printed or copied.

This comic is available to read on www.tebeka.com only; it cannot be printed or copied. © Rabbi Haim Tebeka.

  1. Page 1 of 163. Cover of Rambam: One Page at a Time, Volume 1, The Rambam and the Moon. An artistic illustration of the Rambam writing by lamplight at night, a crescent moon in the window behind him.
    CoverPage 1 / 163
  2. Page 2 of 163. Authority map: Who establishes Rosh Chodesh? Comic page; its text is part of the image.
    Authority mapPage 2 / 163
  3. Page 3 of 163. Fixed calendar overview: The complete calendar machine Comic page; its text is part of the image.
    Fixed calendar overviewPage 3 / 163
  4. Page 4 of 163. Chapters 11–19 overview: The complete sky-position machine Comic page; its text is part of the image.
    Chapters 11–19 overviewPage 4 / 163
  5. Page 5 of 163. 20-week study map, weeks 1–10 Comic page; its text is part of the image.
    20-week study map, weeks 1–10Page 5 / 163
  6. Page 6 of 163. 20-week study map, weeks 11–20 Comic page; its text is part of the image.
    20-week study map, weeks 11–20Page 6 / 163
  7. Page 7 of 163. Day 001, week 01: Who was the Rambam? Beginner’s question: Was Rambam a person, a book, or a title? Comic page; its text is part of the image.
    Day 001 · Week 01Page 7 / 163
  8. Page 8 of 163. Day 002, week 01: Where was Córdoba? Beginner’s question: If Córdoba is in Spain today, was Rambam born in the country we now call Spain? Comic page; its text is part of the image.
    Day 002 · Week 01Page 8 / 163
  9. Page 9 of 163. Day 003, week 01: What does “medieval” mean here? Beginner’s question: Does medieval mean ancient, primitive, or unable to do serious science? Comic page; its text is part of the image.
    Day 003 · Week 01Page 9 / 163
  10. Page 10 of 163. Day 004, week 01: What languages surrounded him? Beginner’s question: Why would one scholar choose different languages and writing systems for different books? Comic page; its text is part of the image.
    Day 004 · Week 01Page 10 / 163
  11. Page 11 of 163. Day 005, week 01: Who taught young Moshe? Beginner’s question: Can we reconstruct Rambam’s childhood classroom from the fact that he became a great scholar? Comic page; its text is part of the image.
    Day 005 · Week 01Page 11 / 163
  12. Page 12 of 163. Day 006, week 01: Why did the world become dangerous? Beginner’s question: What changed around Rambam’s family, and what do historians actually know about their departure? Comic page; its text is part of the image.
    Day 006 · Week 01Page 12 / 163
  13. Page 13 of 163. Day 007, week 01: What can a map honestly show? Beginner’s question: If we know several places Rambam reached, may we connect them with one confident travel line? Comic page; its text is part of the image.
    Day 007 · Week 01Page 13 / 163
  14. Page 14 of 163. Day 008, week 02: Why does Fez matter? Beginner’s question: Is Fez only a stop between Córdoba and Egypt, or part of Rambam’s development? Comic page; its text is part of the image.
    Day 008 · Week 02Page 14 / 163
  15. Page 15 of 163. Day 009, week 02: Did Rambam reach the land of Israel? Beginner’s question: Can we say Rambam visited the Land of Israel without pretending every date and stop is settled? Comic page; its text is part of the image.
    Day 009 · Week 02Page 15 / 163
  16. Page 16 of 163. Day 010, week 02: Was Fustat the same as Cairo? Beginner’s question: Why does a biography place Rambam in Fustat but also connect him to Cairo’s ruling court? Comic page; its text is part of the image.
    Day 010 · Week 02Page 16 / 163
  17. Page 17 of 163. Day 011, week 02: What happened to his brother David? Beginner’s question: How can one surviving letter open a whole world without telling us every detail? Comic page; its text is part of the image.
    Day 011 · Week 02Page 17 / 163
  18. Page 18 of 163. Day 012, week 02: How could one person be physician and leader? Beginner’s question: Did Rambam perform every role at once, or did responsibility consume his time in sequence? Comic page; its text is part of the image.
    Day 012 · Week 02Page 18 / 163
  19. Page 19 of 163. Day 013, week 02: What did Rambam write? Beginner’s question: Why didn’t Rambam place every idea into one enormous book? Comic page; its text is part of the image.
    Day 013 · Week 02Page 19 / 163
  20. Page 20 of 163. Day 014, week 02: Why do people still study him? Beginner’s question: What makes a medieval author a living study partner rather than only a historical figure? Comic page; its text is part of the image.
    Day 014 · Week 02Page 20 / 163
  21. Page 21 of 163. Day 015, week 03: Why do we need two clocks? Beginner’s question: Why not build the Jewish calendar from only the Moon or only the seasons? Comic page; its text is part of the image.
    Day 015 · Week 03Page 21 / 163
  22. Page 22 of 163. Day 016, week 03: Why does the moon change shape? Beginner’s question: During ordinary Moon phases, is Earth’s shadow covering part of the Moon? Comic page; its text is part of the image.
    Day 016 · Week 03Page 22 / 163
  23. Page 23 of 163. Day 017, week 03: Is conjunction already a visible crescent? Beginner’s question: Are conjunction, molad, first crescent, and Rosh Chodesh four names for one instant? Comic page; its text is part of the image.
    Day 017 · Week 03Page 23 / 163
  24. Page 24 of 163. Day 018, week 03: Why can a month not begin halfway through a day? Beginner’s question: If an astronomical event happens at a precise time, why not start the month at that minute? Comic page; its text is part of the image.
    Day 018 · Week 03Page 24 / 163
  25. Page 25 of 163. Day 019, week 03: Who does what? Beginner’s question: When a crescent is seen, which actions belong to the observer, witnesses, judges, and community? Comic page; its text is part of the image.
    Day 019 · Week 03Page 25 / 163
  26. Page 26 of 163. Day 020, week 03: Which calendar machine are we using? Beginner’s question: Are witnessed sanctification, today’s fixed calendar, and Rambam’s visibility calculation one system? Comic page; its text is part of the image.
    Day 020 · Week 03Page 26 / 163
  27. Page 27 of 163. Day 021, week 03: Astronomy or astrology? Beginner’s question: If both subjects mention stars and planets, how can we tell which kind of claim Rambam is using? Comic page; its text is part of the image.
    Day 021 · Week 03Page 27 / 163
  28. Page 28 of 163. Day 022, week 04: What is the mitzvah? Beginner’s question: Why does Rambam begin with calculation, knowledge, and establishment instead of simply saying, “Watch the Moon”? Comic page; its text is part of the image.
    Day 022 · Week 04Page 28 / 163
  29. Page 29 of 163. Day 023, week 04: Are Jewish months lunar? Beginner’s question: What recurring event makes one Jewish month feel like one complete month? Comic page; its text is part of the image.
    Day 023 · Week 04Page 29 / 163
  30. Page 30 of 163. Day 024, week 04: Then why care about the sun? Beginner’s question: If each month follows the Moon, what prevents Pesach from wandering through every season? Comic page; its text is part of the image.
    Day 024 · Week 04Page 30 / 163
  31. Page 31 of 163. Day 025, week 04: Where does the moon go before renewal? Beginner’s question: When the old crescent disappears, has the Moon vanished, stopped shining, or moved too near the Sun’s direction to see? Comic page; its text is part of the image.
    Day 025 · Week 04Page 31 / 163
  32. Page 32 of 163. Day 026, week 04: What do “full” and “deficient” mean? Beginner’s question: Do full and deficient describe the Moon’s shape or the number of days in the calendar month? Comic page; its text is part of the image.
    Day 026 · Week 04Page 32 / 163
  33. Page 33 of 163. Day 027, week 04: If I see it, can I declare Rosh Chodesh? Beginner’s question: Why is an honest private sighting not enough to create the community’s calendar date? Comic page; its text is part of the image.
    Day 027 · Week 04Page 33 / 163
  34. Page 34 of 163. Day 028, week 04: Who was authorized to establish Rosh Chodesh—and why? Beginner’s question: By whom was Rosh Chodesh established, where did that authority come from, and what public problem did it solve? Comic page; its text is part of the image.
    Day 028 · Week 04Page 34 / 163
  35. Page 35 of 163. Day 029, week 05: Who could testify under Rambam’s law? Beginner’s question: What legal qualifications did Rambam require, and how can we explain them without pretending they are a modern courtroom policy? Comic page; its text is part of the image.
    Day 029 · Week 05Page 35 / 163
  36. Page 36 of 163. Day 030, week 05: Why would anyone sabotage a sighting? Beginner’s question: If witnesses were usually trusted, why did the court add identity checks and deeper examination? Comic page; its text is part of the image.
    Day 030 · Week 05Page 36 / 163
  37. Page 37 of 163. Day 031, week 05: Which way did the crescent point? Beginner’s question: How could questions about direction, width, and height test whether witnesses described the same Moon? Comic page; its text is part of the image.
    Day 031 · Week 05Page 37 / 163
  38. Page 38 of 163. Day 032, week 05: Moon or glowing cloud? Beginner’s question: Can a bright curved shape count as a sighting if it appears in water, cloud, or reflected glass? Comic page; its text is part of the image.
    Day 032 · Week 05Page 38 / 163
  39. Page 39 of 163. Day 033, week 05: “I saw it, then lost it”—is that enough? Beginner’s question: Why might an honest first glimpse fail if careful looking cannot recover the crescent? Comic page; its text is part of the image.
    Day 033 · Week 05Page 39 / 163
  40. Page 40 of 163. Day 034, week 05: Why interview witnesses separately? Beginner’s question: How can a court compare two memories without letting one witness reshape the other’s account? Comic page; its text is part of the image.
    Day 034 · Week 05Page 40 / 163
  41. Page 41 of 163. Day 035, week 05: What does “Mekudash” do? Beginner’s question: If everyone has seen the crescent, why does the court still need to declare the month during the day? Comic page; its text is part of the image.
    Day 035 · Week 05Page 41 / 163
  42. Page 42 of 163. Day 036, week 06: What if witnesses are running out of daylight? Beginner’s question: Why does distance decide whether witnesses should begin the journey to court? Comic page; its text is part of the image.
    Day 036 · Week 06Page 42 / 163
  43. Page 43 of 163. Day 037, week 06: Could witnesses travel on Shabbat? Beginner’s question: Why could testimony for certain months justify travel that would ordinarily be prohibited on Shabbat? Comic page; its text is part of the image.
    Day 037 · Week 06Page 43 / 163
  44. Page 44 of 163. Day 038, week 06: Who helps a witness reach court? Beginner’s question: If a witness is unknown, sick, threatened, or far from food, does the system simply lose the testimony? Comic page; its text is part of the image.
    Day 038 · Week 06Page 44 / 163
  45. Page 45 of 163. Day 039, week 06: What if testimony comes late? Beginner’s question: How did one delayed witness case change the deadline while the Temple stood—and why was that rule later changed back? Comic page; its text is part of the image.
    Day 039 · Week 06Page 45 / 163
  46. Page 46 of 163. Day 040, week 06: How can a fire carry a date? Beginner’s question: How could distant communities learn one court decision before telephones, printing, or fast travel? Comic page; its text is part of the image.
    Day 040 · Week 06Page 46 / 163
  47. Page 47 of 163. Day 041, week 06: Why did distant communities keep two festival days? Beginner’s question: How can distance from a messenger turn one commanded festival date into two days of observance? Comic page; its text is part of the image.
    Day 041 · Week 06Page 47 / 163
  48. Page 48 of 163. Day 042, week 06: What if the case remains messy? Beginner’s question: Can very late testimony reopen a month, and why does Rambam describe judicial pressure in opposite directions? Comic page; its text is part of the image.
    Day 042 · Week 06Page 48 / 163
  49. Page 49 of 163. Day 043, week 07: Why add Adar? Beginner’s question: When the lunar calendar falls behind the seasons, why add a second Adar rather than changing Nisan or adding loose days? Comic page; its text is part of the image.
    Day 043 · Week 07Page 49 / 163
  50. Page 50 of 163. Day 044, week 07: What does the spring equinox have to do with Nisan? Beginner’s question: How did the court use a calculated seasonal turning point to decide whether Pesach would arrive too early? Comic page; its text is part of the image.
    Day 044 · Week 07Page 50 / 163
  51. Page 51 of 163. Day 045, week 07: Can barley and fruit influence a calendar discussion? Beginner’s question: Why would judges inspect crops and trees if the calendar already uses astronomy? Comic page; its text is part of the image.
    Day 045 · Week 07Page 51 / 163
  52. Page 52 of 163. Day 046, week 07: What do muddy roads and broken bridges change? Beginner’s question: Why would public travel and festival preparation matter when judges decide whether to add a month? Comic page; its text is part of the image.
    Day 046 · Week 07Page 52 / 163
  53. Page 53 of 163. Day 047, week 07: Who is invited into the leap-year room? Beginner’s question: Why does Rambam require invited, ordained judges and a staged quorum instead of one expert making the leap-year decision? Comic page; its text is part of the image.
    Day 047 · Week 07Page 53 / 163
  54. Page 54 of 163. Day 048, week 07: When power must step back. Beginner’s question: Can politics distort a calendar decision? Comic page; its text is part of the image.
    Day 048 · Week 07Page 54 / 163
  55. Page 55 of 163. Day 049, week 07: A letter changes the year. Beginner’s question: How was an added month announced? Comic page; its text is part of the image.
    Day 049 · Week 07Page 55 / 163
  56. Page 56 of 163. Day 050, week 08: Two calendar machines. Beginner’s question: What changed between the witnessed and fixed eras? Comic page; its text is part of the image.
    Day 050 · Week 08Page 56 / 163
  57. Page 57 of 163. Day 051, week 08: The festival messenger race. Beginner’s question: How did observed months affect distant festivals? Comic page; its text is part of the image.
    Day 051 · Week 08Page 57 / 163
  58. Page 58 of 163. Day 052, week 08: Certainty, yet two days. Beginner’s question: Why continue two days after the calendar became fixed? Comic page; its text is part of the image.
    Day 052 · Week 08Page 58 / 163
  59. Page 59 of 163. Day 053, week 08: Jerusalem's two-day puzzle. Beginner’s question: Why two days of Rosh Hashanah even in Jerusalem? Comic page; its text is part of the image.
    Day 053 · Week 08Page 59 / 163
  60. Page 60 of 163. Day 054, week 08: Miles are not roads. Beginner’s question: Is distance the same as a messenger route? Comic page; its text is part of the image.
    Day 054 · Week 08Page 60 / 163
  61. Page 61 of 163. Day 055, week 08: When custom knows the route. Beginner’s question: What if custom and calculated distance disagree? Comic page; its text is part of the image.
    Day 055 · Week 08Page 61 / 163
  62. Page 62 of 163. Day 056, week 08: Knowing is not legislating. Beginner’s question: Why can I calculate a date but not establish it? Comic page; its text is part of the image.
    Day 056 · Week 08Page 62 / 163
  63. Page 63 of 163. Day 057, week 09: Molad: the mean meeting. Beginner’s question: What exactly is a molad? Comic page; its text is part of the image.
    Day 057 · Week 09Page 63 / 163
  64. Page 64 of 163. Day 058, week 09: The hour with 1,080 pieces. Beginner’s question: Why divide an hour into 1,080 parts? Comic page; its text is part of the image.
    Day 058 · Week 09Page 64 / 163
  65. Page 65 of 163. Day 059, week 09: The mean lunar month. Beginner’s question: How long is the calendar's mean lunar month? Comic page; its text is part of the image.
    Day 059 · Week 09Page 65 / 163
  66. Page 66 of 163. Day 060, week 09: Build a year from months. Beginner’s question: What do ordinary and leap-year totals look like? Comic page; its text is part of the image.
    Day 060 · Week 09Page 66 / 163
  67. Page 67 of 163. Day 061, week 09: Carry, then drop whole weeks. Beginner’s question: How do units carry and weeks disappear? Comic page; its text is part of the image.
    Day 061 · Week 09Page 67 / 163
  68. Page 68 of 163. Day 062, week 09: Seven leaps in nineteen years. Beginner’s question: Why nineteen years and seven leap years? Comic page; its text is part of the image.
    Day 062 · Week 09Page 68 / 163
  69. Page 69 of 163. Day 063, week 09: Epoch to Molad Tishrei 5787. Beginner’s question: Can we calculate a target year's molad from the epoch? Comic page; its text is part of the image.
    Day 063 · Week 09Page 69 / 163
  70. Page 70 of 163. Day 064, week 10: The Molad is an input, not always the date. Beginner’s question: Why not always use the molad day? Comic page; its text is part of the image.
    Day 064 · Week 10Page 70 / 163
  71. Page 71 of 163. Day 065, week 10: Lo Adu Rosh. Beginner’s question: Which weekdays are excluded for Rosh Hashanah? Comic page; its text is part of the image.
    Day 065 · Week 10Page 71 / 163
  72. Page 72 of 163. Day 066, week 10: The noon gate. Beginner’s question: What happens when the molad is at noon or later? Comic page; its text is part of the image.
    Day 066 · Week 10Page 72 / 163
  73. Page 73 of 163. Day 067, week 10: The ordinary-year safety gate. Beginner’s question: Why can an ordinary year trigger a special delay? Comic page; its text is part of the image.
    Day 067 · Week 10Page 73 / 163
  74. Page 74 of 163. Day 068, week 10: The after-leap gate—and a full calendar chain. Beginner’s question: What changes after a leap year? Comic page; its text is part of the image.
    Day 068 · Week 10Page 74 / 163
  75. Page 75 of 163. Day 069, week 10: Whole days, stable months. Beginner’s question: How do whole-day months form a stable sequence? Comic page; its text is part of the image.
    Day 069 · Week 10Page 75 / 163
  76. Page 76 of 163. Day 070, week 10: Six shapes of a year. Beginner’s question: Why do Marcheshvan and Kislev vary? Comic page; its text is part of the image.
    Day 070 · Week 10Page 76 / 163
  77. Page 77 of 163. Day 071, week 11: Two traditional solar yardsticks. Beginner’s question: Why are there two solar-year estimates? Comic page; its text is part of the image.
    Day 071 · Week 11Page 77 / 163
  78. Page 78 of 163. Day 072, week 11: Shemuel's 365-day, 6-hour year. Beginner’s question: How is Shemuel's year built? Comic page; its text is part of the image.
    Day 072 · Week 11Page 78 / 163
  79. Page 79 of 163. Day 073, week 11: Quartering the solar year. Beginner’s question: What are the four seasonal turning points? Comic page; its text is part of the image.
    Day 073 · Week 11Page 79 / 163
  80. Page 80 of 163. Day 074, week 11: Seasonal remainders around the week. Beginner’s question: How does the seasonal cycle repeat? Comic page; its text is part of the image.
    Day 074 · Week 11Page 80 / 163
  81. Page 81 of 163. Day 075, week 11: A fast traditional estimate. Beginner’s question: Can we estimate the weekday and date simply? Comic page; its text is part of the image.
    Day 075 · Week 11Page 81 / 163
  82. Page 82 of 163. Day 076, week 11: Rav Adda's finer year. Beginner’s question: What is Rav Adda's solar-year estimate? Comic page; its text is part of the image.
    Day 076 · Week 11Page 82 / 163
  83. Page 83 of 163. Day 077, week 11: Which solar yardstick served the court? Beginner’s question: Which estimate did the court use? Comic page; its text is part of the image.
    Day 077 · Week 11Page 83 / 163
  84. Page 84 of 163. Day 078, week 12: Why a law code teaches the sky. Beginner’s question: Why place difficult astronomy inside a law code? Comic page; its text is part of the image.
    Day 078 · Week 12Page 84 / 163
  85. Page 85 of 163. Day 079, week 12: Precise enough for the question. Beginner’s question: Does Rambam claim perfect precision? Comic page; its text is part of the image.
    Day 079 · Week 12Page 85 / 163
  86. Page 86 of 163. Day 080, week 12: A 360-degree sky circle. Beginner’s question: How can a circle describe the sky? Comic page; its text is part of the image.
    Day 080 · Week 12Page 86 / 163
  87. Page 87 of 163. Day 081, week 12: Twelve thirty-degree address blocks. Beginner’s question: What are mazal sectors doing in this calculation? Comic page; its text is part of the image.
    Day 081 · Week 12Page 87 / 163
  88. Page 88 of 163. Day 082, week 12: Degrees, minutes, seconds. Beginner’s question: How small can an angle become? Comic page; its text is part of the image.
    Day 082 · Week 12Page 88 / 163
  89. Page 89 of 163. Day 083, week 12: Wrap the circle, borrow the units. Beginner’s question: What happens after360 degrees? Comic page; its text is part of the image.
    Day 083 · Week 12Page 89 / 163
  90. Page 90 of 163. Day 084, week 12: Mean sky, apparent sky, fixed epoch. Beginner’s question: What are mean and apparent positions? Comic page; its text is part of the image.
    Day 084 · Week 12Page 90 / 163
  91. Page 91 of 163. Day 085, week 13: The sun's mean daily step. Beginner’s question: How far does the mean Sun move each day? Comic page; its text is part of the image.
    Day 085 · Week 13Page 91 / 163
  92. Page 92 of 163. Day 086, week 13: The off-center model and the apogee. Beginner’s question: Why is the historical orbit off-center? Comic page; its text is part of the image.
    Day 086 · Week 13Page 92 / 163
  93. Page 93 of 163. Day 087, week 13: Mean sun: a 100-day calculation. Beginner’s question: How do we calculate the mean Sun for a date? Comic page; its text is part of the image.
    Day 087 · Week 13Page 93 / 163
  94. Page 94 of 163. Day 088, week 13: From solar course to correction. Beginner’s question: Why correct the mean result? Comic page; its text is part of the image.
    Day 088 · Week 13Page 94 / 163
  95. Page 95 of 163. Day 089, week 13: One half-table mirrors the other. Beginner’s question: Can symmetry reduce the correction table? Comic page; its text is part of the image.
    Day 089 · Week 13Page 95 / 163
  96. Page 96 of 163. Day 090, week 13: Between table rows. Beginner’s question: What if the value falls between rows? Comic page; its text is part of the image.
    Day 090 · Week 13Page 96 / 163
  97. Page 97 of 163. Day 091, week 13: Complete the true, or apparent, sun. Beginner’s question: Where is the true Sun in the worked example? Comic page; its text is part of the image.
    Day 091 · Week 13Page 97 / 163
  98. Page 98 of 163. Day 092, week 14: The moon runs on two mean tracks. Beginner’s question: Why does the Moon need two mean motions? Comic page; its text is part of the image.
    Day 092 · Week 14Page 98 / 163
  99. Page 99 of 163. Day 093, week 14: Advance both lunar tracks ten days. Beginner’s question: How do lunar motion tables accumulate? Comic page; its text is part of the image.
    Day 093 · Week 14Page 99 / 163
  100. Page 100 of 163. Day 095, week 14: Double the gap—but why? Beginner’s question: Why does Rambam double the Moon–Sun separation before correcting the Moon? Comic page; its text is part of the image.
    Day 095 · Week 14Page 100 / 163
  101. Page 101 of 163. Day 096, week 14: The index chooses a band. Beginner’s question: How does 35°56’12 change the Moon’s mean course? Comic page; its text is part of the image.
    Day 096 · Week 14Page 101 / 163
  102. Page 102 of 163. Day 097, week 14: Eight tenths between two rows. Beginner’s question: How do we estimate the lunar correction at 108° between the 100° and 110° rows? Comic page; its text is part of the image.
    Day 097 · Week 14Page 102 / 163
  103. Page 103 of 163. Day 098, week 14: Mean moon becomes true moon. Beginner’s question: How does the 5°01’ correction produce Rambam’s true Moon position? Comic page; its text is part of the image.
    Day 098 · Week 14Page 103 / 163
  104. Page 104 of 163. Day 099, week 15: Two hoops cross. Beginner’s question: Why can the Moon be north or south of the Sun’s path even after we know its longitude? Comic page; its text is part of the image.
    Day 099 · Week 15Page 104 / 163
  105. Page 105 of 163. Day 100, week 15: The crossings move backward. Beginner’s question: What are the head and tail nodes, and how does Rambam locate them? Comic page; its text is part of the image.
    Day 100 · Week 15Page 105 / 163
  106. Page 106 of 163. Day 101, week 15: Always half a circle apart. Beginner’s question: Why is the tail node always opposite the head node? Comic page; its text is part of the image.
    Day 101 · Week 15Page 106 / 163
  107. Page 107 of 163. Day 102, week 15: Latitude is the sideways answer. Beginner’s question: What exactly does lunar latitude measure? Comic page; its text is part of the image.
    Day 102 · Week 15Page 107 / 163
  108. Page 108 of 163. Day 103, week 15: Three minutes for each degree. Beginner’s question: How does Rambam interpolate lunar latitude for a course of 53°? Comic page; its text is part of the image.
    Day 103 · Week 15Page 108 / 163
  109. Page 109 of 163. Day 104, week 15: Fold the circle to one quadrant. Beginner’s question: How does Rambam reuse a 0°–90° latitude table for courses anywhere around 360°? Comic page; its text is part of the image.
    Day 104 · Week 15Page 109 / 163
  110. Page 110 of 163. Day 106, week 16: First longitude opens the case. Beginner’s question: What is first longitude, and why does Rambam test it before the longer visibility calculation? Comic page; its text is part of the image.
    Day 106 · Week 16Page 110 / 163
  111. Page 111 of 163. Day 107, week 16: The sky half changes the gate. Beginner’s question: Why does the first-longitude quick test use different limits in different sector ranges? Comic page; its text is part of the image.
    Day 107 · Week 16Page 111 / 163
  112. Page 112 of 163. Day 108, week 16: True position is not yet seen position. Beginner’s question: Why does Rambam subtract a sector-based sighting adjustment from first longitude? Comic page; its text is part of the image.
    Day 108 · Week 16Page 112 / 163
  113. Page 113 of 163. Day 109, week 16: North subtracts; south adds. Beginner’s question: How does the sighting adjustment change lunar latitude? Comic page; its text is part of the image.
    Day 109 · Week 16Page 113 / 163
  114. Page 114 of 163. Day 110, week 16: Second, third, fourth. Beginner’s question: How do the Moon’s circuit and sector factor turn second longitude into third and fourth longitude? Comic page; its text is part of the image.
    Day 110 · Week 16Page 114 / 163
  115. Page 115 of 163. Day 111, week 16: The observer’s place enters. Beginner’s question: How does Rambam’s geographic-latitude correction turn fourth longitude into the arc of sighting? Comic page; its text is part of the image.
    Day 111 · Week 16Page 115 / 163
  116. Page 116 of 163. Day 112, week 16: The entire visibility conveyor. Beginner’s question: Can a beginner trace Rambam’s full Chapter 17 example from inputs to sighting arc? Comic page; its text is part of the image.
    Day 112 · Week 16Page 116 / 163
  117. Page 117 of 163. Day 113, week 17: Three regions, not one magic number. Beginner’s question: How does Rambam classify the arc of sighting before using the paired limits? Comic page; its text is part of the image.
    Day 113 · Week 17Page 117 / 163
  118. Page 118 of 163. Day 114, week 17: Both coordinates must pass. Beginner’s question: Can a strong arc compensate for first longitude below its paired minimum? Comic page; its text is part of the image.
    Day 114 · Week 17Page 118 / 163
  119. Page 119 of 163. Day 115, week 17: Our case finds its row. Beginner’s question: Which paired limit applies to an arc of sighting of 11°11’? Comic page; its text is part of the image.
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  120. Page 120 of 163. Day 116, week 17: The staircase is complete. Beginner’s question: What is the final paired-limit row, and how do all five rows fit together? Comic page; its text is part of the image.
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  121. Page 121 of 163. Day 118, week 17: Precision serves the decision. Beginner’s question: Why does Rambam sometimes drop seconds or round minutes in such a careful calculation? Comic page; its text is part of the image.
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  122. Page 122 of 163. Day 119, week 17: Proof does not borrow a famous name. Beginner’s question: Why does Rambam direct the reader to astronomy and geometry for the reasons behind the rules? Comic page; its text is part of the image.
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  123. Page 123 of 163. Day 120, week 18: Possible is not promised. Beginner’s question: Can a correct visibility calculation guarantee that someone will actually see the crescent? Comic page; its text is part of the image.
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  124. Page 124 of 163. Day 121, week 18: The air can hide an unchanged case. Beginner’s question: How can season, haze, and twilight change the visibility of the same thin crescent? Comic page; its text is part of the image.
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  125. Page 125 of 163. Day 122, week 18: Three observers, three horizons. Beginner’s question: Why can observers in a valley, on a roof, or on a mountain report different results? Comic page; its text is part of the image.
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  126. Page 126 of 163. Day 123, week 18: The endless-extension mistake. Beginner’s question: Why can repeated non-sighting not produce an endless chain of thirty-day months? Comic page; its text is part of the image.
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  127. Page 127 of 163. Day 124, week 18: A received fallback, not a guess. Beginner’s question: What pattern could the historical court use when crescents repeatedly went unseen? Comic page; its text is part of the image.
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  128. Page 128 of 163. Day 125, week 18: An old saying needs its setting. Beginner’s question: How should a beginner read memorable calendar sayings from the witnessed era? Comic page; its text is part of the image.
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  129. Page 129 of 163. Day 126, week 18: One moon, directional evidence. Beginner’s question: How does Rambam reason about reports from places east or west on the same latitude? Comic page; its text is part of the image.
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  130. Page 130 of 163. Day 127, week 19: The horns become evidence. Beginner’s question: Why did the historical court ask which way the thin crescent was inclined? Comic page; its text is part of the image.
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  131. Page 131 of 163. Day 128, week 19: Two great sky hoops. Beginner’s question: What is the difference between the celestial equator and the ecliptic? Comic page; its text is part of the image.
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  132. Page 132 of 163. Day 129, week 19: North, zero, south, zero. Beginner’s question: How does the Sun’s ecliptic position acquire a north-or-south inclination? Comic page; its text is part of the image.
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  133. Page 133 of 163. Day 130, week 19: Interpolate the inclination table. Beginner’s question: How does Rambam estimate inclination for a longitude that falls between table rows? Comic page; its text is part of the image.
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  134. Page 134 of 163. Day 131, week 19: Two latitudes, one signed result. Beginner’s question: How does Rambam combine ecliptic inclination with the Moon’s own latitude? Comic page; its text is part of the image.
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  135. Page 135 of 163. Day 132, week 19: Which way does the crescent open? Beginner’s question: How does Rambam map the Moon’s equator distance to a compass orientation? Comic page; its text is part of the image.
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  136. Page 136 of 163. Day 133, week 19: Arc length predicts apparent height. Beginner’s question: Why does Rambam connect a short sighting arc with a low Moon and a long arc with a higher Moon? Comic page; its text is part of the image.
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  137. Page 137 of 163. Day 134, week 20: One wheel, two different questions. Beginner’s question: How can the same twelve sky sectors belong to astronomy without becoming astrology? Comic page; its text is part of the image.
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  138. Page 138 of 163. Day 135, week 20: The lucky-time claim. Beginner’s question: What does auspicious-time astrology claim, and how is it different from ordinary planning? Comic page; its text is part of the image.
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  139. Page 139 of 163. Day 137, week 20: A wider evidence boundary. Beginner’s question: Is Rambam rejecting only lucky hours, or a broader family of occult claims? Comic page; its text is part of the image.
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  140. Page 140 of 163. Day 140, week 20: The choice returns to you. Beginner’s question: Does a star, birth sign, temperament, or prediction force a person to choose good or evil? Comic page; its text is part of the image.
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  141. Page 141 of 163. Calculation lab 1: One mean month in parts Comic page; its text is part of the image.
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  142. Page 142 of 163. Calculation lab 2: The remainders that make years Comic page; its text is part of the image.
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  143. Page 143 of 163. Calculation lab 3: Epoch to Molad Tishrei, year 20 Comic page; its text is part of the image.
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  144. Page 144 of 163. Calculation lab 4: Molad to Rosh Hashanah Comic page; its text is part of the image.
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  145. Page 145 of 163. Calculation lab 5: From two new years to a year shape Comic page; its text is part of the image.
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  146. Page 146 of 163. Calculation lab 6: Circular arithmetic Comic page; its text is part of the image.
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  147. Page 147 of 163. Calculation lab 7: The sun pipeline Comic page; its text is part of the image.
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  148. Page 148 of 163. Calculation lab 8: The moon pipeline Comic page; its text is part of the image.
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  149. Page 149 of 163. Calculation lab 9: Nodes and latitude Comic page; its text is part of the image.
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  150. Page 150 of 163. Calculation lab 10: Chapter 17 complete worked case Comic page; its text is part of the image.
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  151. Page 151 of 163. Calculation lab 11: What the answer can and cannot say Comic page; its text is part of the image.
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  152. Page 152 of 163. Calculation lab 12: The two-question safeguard Comic page; its text is part of the image.
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  153. Page 153 of 163. Glossary, part 1 of 4 Comic page; its text is part of the image.
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  154. Page 154 of 163. Glossary, part 2 of 4 Comic page; its text is part of the image.
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  155. Page 155 of 163. Glossary, part 3 of 4 Comic page; its text is part of the image.
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  156. Page 156 of 163. Glossary, part 4 of 4 Comic page; its text is part of the image.
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  157. Page 157 of 163. Source directory, part 1 of 7 Comic page; its text is part of the image.
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  158. Page 158 of 163. Source directory, part 2 of 7 Comic page; its text is part of the image.
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  159. Page 159 of 163. Source directory, part 3 of 7 Comic page; its text is part of the image.
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  160. Page 160 of 163. Source directory, part 4 of 7 Comic page; its text is part of the image.
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  161. Page 161 of 163. Source directory, part 5 of 7 Comic page; its text is part of the image.
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  162. Page 162 of 163. Source directory, part 6 of 7 Comic page; its text is part of the image.
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  163. Page 163 of 163. Source directory, part 7 of 7 Comic page; its text is part of the image.
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