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卷八十三 志第三十六 律曆十六

Volume 83 Treatises 36: Measures and Calendar 16

Chapter 83 of 宋史 · History of Song
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Chapter 83
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1
The Calendars of Shaoxing, Tongyuan, Qiandao, Chunxi, and Huiyuan.
2
By the era-cycle reckoning from the Superior Origin in the year jiazi, the elapsed count to the fifth year of Shaoxing (1135), year yimao, stands at 94,251,591 years. For the Qiandao calendar, from the Superior Origin in the year jiazi to the third year of Qiandao (1167), year dinghai, the accumulated count is 91,645,823 years. For the Chunxi calendar, from the Superior Origin in the year jiazi to the third year of Chunxi (1176), year bingshen, the accumulated count is 52,421,972 years. For the Huiyuan calendar, from the Superior Origin in the year jiazi to the third year of Shaoxi (1190), year xinhai, the accumulated count is 25,494,767 years.
3
Procedure for Calculating Qi and New Moons.
4
Origin divisor: 6,930. Qiandao: 30,000. Chunxi: 5,640. Huiyuan: unified rate 38,700.
5
Tropical year cycle: 2,531,138; tropical year in days: 365, remainder 1,688. Qiandao: period constant 10,957,308; year cycle 365 days, remainder 7,308. Chunxi: year constant 2,059,974; year-day 365, remainder 1,374. Huiyuan: qi rate 14,134,922.
6
Qi interval: 15 days, remainder 1,514, 15 seconds. Qiandao: remainder 6,554½. Chunxi: remainder 1,222, 25 seconds. Huiyuan: remainder 8,455½.
7
New-moon constant: 204,647. Qiandao: 885,917, 76 seconds. Chunxi: 166,552, 56 seconds. Huiyuan: new-moon rate 1,142,834.
8
Year intercalation: 75,374. Qiandao: 326,294, 88 seconds; also an intercalation limit of 858,726, 52 seconds; month intercalation 27,191, 24 seconds. Huiyuan: 420,924; also an intercalation limit of 721,910. Qiandao also has a disappearance limit of 22,445½. Chunxi: 4,407, 75 seconds. Huiyuan: 30,244½.
9
New-moon interval: 29 days, remainder 36,077. Qiandao: remainder 15,917, 76 seconds. Chunxi: remainder 3,992, 56 seconds. Huiyuan: remainder 20,534; reduced fraction 53, 5 seconds.
10
Full-moon interval: 14 days, remainder 5,303½. Qiandao: remainder 12,958, 88 seconds. Chunxi: remainder 4,316, 28 seconds. Huiyuan: remainder 29,617.
11
Quarter-moon interval: 7 days, remainder 2,651¾. Qiandao: remainder 11,479, 44 seconds. Chunxi: remainder 2,158, 14 seconds. Huiyuan: remainder 14,808½.
12
Mid-climate excess fraction: 3,328, 30 seconds. Qiandao: 13,109. Chunxi: 2,464, 50 seconds. Huiyuan: 16,911.
13
New-moon void fraction: 3,253. Qiandao: 14,082, 24 seconds. Chunxi: 2,647, 44 seconds. Huiyuan: 18,166.
14
Ten-day cycle: 415,800. Qiandao: 1,800,000. Chunxi: 338,400, 1 second. Huiyuan: 2,322,200.
15
Era-cycle divisor: 60. The same for all three calendars.
16
滿 退
To calculate the winter solstice of the civil new year: take the accumulated years from the epoch sought, multiply by the tropical year cycle to obtain the qi accumulated parts; divide out the ten-day cycle; the remainder, reduced by the general divisor, yields the major remainder; what is left below that is the minor remainder. Count the major remainder from jiazi, one step outside the count, and one obtains the day, double-hour, and remainder of the winter solstice of the civil new year for the year sought. For the minor remainder, divide back through the general divisor to obtain reduced fractions, with one hundred as the denominator.
17
滿滿
To find the next qi: set the winter solstice major and minor remainders, add the qi interval together with its remainder and seconds; when seconds fill the second divisor carry one into the minor remainder, when the minor remainder fills the general divisor carry one into the major remainder, when full remove the era-cycle divisor, count from jiazi one step outside the count, and thereby obtain the day, double-hour, remainder, and seconds of the next qi.
18
滿滿 滿滿
To find the canonical new moon of the civil new year: set the qi accumulated parts of the civil winter solstice, divide out the new-moon constant; the remainder is the intercalary remainder; subtract this from the winter solstice qi accumulated parts; the remainder is the accumulated new-moon parts at the hour of the canonical new moon of the eleventh month of the civil new year; divide out the ten-day cycle; what remains, reduced by the general divisor, yields the major remainder; what is left below that is the minor remainder. Count from jiazi one step outside the count, and one obtains the accumulated new-moon parts at the hour of the canonical new moon of the eleventh month of the civil new year for the year sought. Divide out the ten-day cycle; what remains, reduced by the general divisor, yields the major remainder; what is left below that is the minor remainder. Count the major remainder from jiazi one step outside the count, and one obtains the day, double-hour, and remainder of the canonical new moon of the eleventh month of the civil new year for the year sought.
19
To find the quarter-moon, full-moon, and subsequent canonical new-moon days: set the major and minor remainders of the civil eleventh-month canonical new moon, add the quarter-moon interval to obtain the first quarter; add cumulatively, and by removing and counting as before one obtains in each case the canonical days and remainders for the quarter-moon, full moon, and new moon of the following month.
20
滿
To find the disappearance day: set the minor remainder of the qi subject to disappearance, multiply it by 180 with seconds carried along, subtract this from 1,265,569; divide the remainder by 18,169 to obtain days, and what is left is the remainder. Count from the first day of that qi one step outside the count, and one obtains its qi double-hour. For all twenty-four qi, the minor remainder is 5,415, 165 seconds.
21
滿滿 滿
To find the extinction day: set the minor remainder of the canonical new moon subject to extinction, multiply by 30, and when full divide by the new-moon void fraction to obtain days; what is left is the remainder. Count from the first day of the canonical new moon one step outside the count, and one obtains the extinction day and double-hour of that month. When the minor remainder of the canonical new moon falls short of the new-moon void fraction, that new moon is subject to extinction.
22
Procedure for Issuing and Collecting.
23
Hou interval: 5 days, remainder 504, 125 seconds. Qiandao: remainder 2,184, 25 seconds. Chunxi: remainder 410, 75 seconds. Huiyuan: remainder 2,812, 50 seconds.
24
Gua interval: 6 days, remainder 605, 114 seconds. Qiandao: remainder 2,621, 24 seconds. Chunxi: remainder 492, 90 seconds. Huiyuan: remainder 3,382, 20 seconds.
25
Earth-sovereign interval: 3 days, remainder 302, 147 seconds. Qiandao: remainder 2,310, 27 seconds. Chunxi: remainder 246, 45 seconds. Huiyuan: 1,691, 10 seconds.
26
Double-hour divisor: 577½. Qiandao: 2,500. Chunxi: 470. Huiyuan: 3,225.
27
Half double-hour divisor: 288¾. Qiandao: 1,250. Chunxi: 235. Huiyuan: 1,612½.
28
Quarter-divisor: 693. Qiandao: 300. Chunxi: 564. Huiyuan: 387.
29
Second divisor: 180. Qiandao: 30. Chunxi and Huiyuan: 100 each. Chunxi also has month intercalation 5,111, 94 seconds.
30
To find the sixty-four hexagrams, the days when the Five Phases take charge, the twenty-four qi, and the seventy-two hou. All four calendars follow the previous calendar in this respect; the methods are not recorded here.
31
滿
To find the issuing-and-collecting day as an offset from the canonical new-moon day: set the civil new-year intercalary remainder, cumulatively add the mid-climate excess and new-moon void fractions, and thereby obtain each month's intercalary remainder; when full, divide by the general divisor to obtain intercalary days; what remains is the minor remainder; and in each case one obtains the day and double-hour by which that month's mid-climate stands apart from the canonical new moon. To find the hexagram and hou thereafter, add or subtract cumulatively in sequence using the gua, hou, and earth-sovereign intervals; subtract before the mid-climate and add after it.
32
In each case one obtains the day and double-hour by which that month's hexagram and hou stand apart from the canonical new moon.
33
滿
To find the hour of issuing and collecting: set the minor remainder sought, divide by the double-hour divisor to obtain the double-hour count; for what remains, advance one place and divide by the quarter-divisor to obtain quarters; what is left below that is quarter-fractions. Count its double-hour number from midnight of zi one step outside the count, and in each case obtain the double-hour, quarter, and fraction of the hour sought. With the double-hours and quarters added, count from the beginning of zi.
34
Procedure for the Sun's Motion.
35
Circumference of heaven in parts: 2,531,226, 87 seconds. Qiandao: 10,957,717 parts, 5 seconds.
36
Annual difference: 88, 87 seconds. Qiandao: 409, 5 seconds. Chunxi: 11,513. Huiyuan: orbital difference 525, 13 seconds.
37
Circumference of heaven in degrees: 365, reduced fraction 25, 64 seconds. The same for all three calendars.
38
Multiplication factor: 55. Qiandao: 87. Chunxi: 119. Huiyuan: 119.
39
Division factor: 837. Qiandao: 1,324. Chunxi: 1,812. Huiyuan: 1,811.
40
Second divisor: 100. The same for all three calendars.
41
Qiandao also has a quadrant limit of 91 degrees, 31 minutes, 9 seconds; Chunxi and Huiyuan are the same. Chunxi also has the qian constant 309,007,613; half the circumference of heaven 182 degrees, 25 minutes, 72 seconds. Huiyuan: half the circumference of heaven in degrees is the same, 62 minutes, 86 seconds.
42
宿宿宿宿宿
To find each month's excess-and-deficit parts; the fixed numbers for new moon, quarter-moon, and full moon entering qi and for waxing and waning; equatorial lodge degrees; the sun's equatorial degree at the winter solstice; equatorial lodge accumulated degrees entering the initial and final limits; the twenty-eight lodges' ecliptic degrees; the ecliptic solar degree at the hour of the civil winter solstice; the ecliptic solar degree at the hour of each of the twenty-four qi; the ecliptic solar motion and lodge position at dawn before midnight on the first day of each qi; the ecliptic solar motion and lodge position at dawn before midnight; and the day, double-hour, quarter, and fraction when the sun enters a palace. The methods follow the previous calendar; they are not recorded here.
43
Procedure for Lunar Motion.
44
Rotation cycle in parts: 190,953, 2,563 seconds. Qiandao: 826,637, 7,395 seconds. Chunxi: 155,407, 9,740 seconds. Huiyuan: rotation rate 1,066,361, 7,310 seconds.
45
Rotation cycle in days: 27, remainder 3,843, 2,563 seconds. Qiandao: remainder 16,637, 7,395 seconds. Chunxi: remainder 3,127, 9,704 seconds. Huiyuan: remainder 31,461, 7,310 seconds.
46
New-moon difference in days: 1, remainder 6,763, 7,437 seconds. Qiandao: remainder 29,280, 205 seconds. Chunxi: remainder 5,540, 5,860 seconds. Huiyuan: remainder 37,772, 2,610 seconds.
47
Full-moon interval: 14, remainder 5,303, 5,000 seconds.
48
Quarter-moon interval: 7, remainder 2,651, 7,500 seconds. Qiandao: remainder 11,479, 4,400 seconds. Chunxi: remainder 2,158, 1,400 seconds. Huiyuan: 14,808, 50 seconds.
49
Seventh day: initial number 6,158, reduced fraction 89; final number 772, reduced fraction 11.
50
Fourteenth day: initial number 5,387, reduced fraction 78; final number 1,543, reduced fraction 22.
51
Twenty-first day: initial number 4,615, reduced fraction 67; final number 2,315, reduced fraction 33.
52
Twenty-eighth day: initial number 3,843, reduced fraction 55; final number: none.
53
Above, the second denominator is 10,000.
54
Below, the second denominator is 100.
55
First quarter: 91 degrees 31 minutes, 41 seconds. The same for all three calendars.
56
Full moon: 182 degrees 62 minutes, 82 seconds. For all three calendars: 86 seconds.
57
Last quarter: 273 degrees 94 minutes, 23 seconds. For all three calendars: 29 seconds.
58
Mean motion in parts: 13 degrees 36 minutes, 87½ seconds.
59
To calculate entry into rotation for the civil eleventh-month canonical new moon, and for the canonical quarter-moon, full moon, and subsequent new moon. The methods follow the previous calendar; they are not recorded here.
60
Qiandao also has for the seventh day initial number 26,659, initial reduced fraction 89, final number 3,341, final reduced fraction 1,001; fourteenth day initial number 22,319, initial reduced fraction 78, final number 6,681, final reduced fraction 23; twenty-first day initial number 19,998, initial reduced fraction 67, final number 10,022, final reduced fraction 33; twenty-eighth day initial number 16,637, initial reduced fraction 55, final number none, final reduced fraction none. Chunxi: seventh day initial number 5,011, final number 620, initial reduced fraction 89, final reduced fraction 1,002; fourteenth day initial number 4,383, final number 1,257, initial reduced fraction 78, final reduced fraction 22; twenty-first day initial number 3,755, final number 1,885, initial reduced fraction 67, final reduced fraction 33; twenty-eighth day initial number 3,127, initial reduced fraction 55. Huiyuan: seventh day initial number 34,390, initial reduced fraction 89, final number 4,310, final reduced fraction 11; fourteenth day initial number 38,000, initial reduced fraction 78, final number 8,620, final reduced fraction 21; twenty-first day initial number 25,772, initial reduced fraction 67, final number 12,929, final reduced fraction 33; twenty-eighth day initial number 21,004, initial reduced fraction 55, final number 161.
61
宿宿宿
To find the fixed numbers for new moon, quarter-moon, and full moon entering rotation and for waxing and waning: the fixed days of new moon, quarter-moon, and full moon; the degrees where the sun stands at the hour of new moon, quarter-moon, and full moon; calculate the moon's motion along the nine paths; find the lodge degrees of the nine paths; the moon's motion along the nine paths at mean crossing entering qi; fixed entry into rotation; fixed numbers for waxing and waning; true crossing entering qi; the ecliptic solar degree at the hour of true crossing; the moon's departure from the nine-path lodge degree at the hour of true crossing; the lodge degrees where the fixed new moon, quarter-moon, and full moon stand; fixed new moon at midnight entering rotation; the next new moon at midnight entering rotation; the moon's degrees at dawn and dusk; the fixed schedules for dawn and dusk at new moon, quarter-moon, and full moon; the fixed rotation degree; the moon at dawn and dusk; the mean moon at the hour of the civil eleventh-month canonical new moon; the mean moon at dawn before midnight on the fixed civil eleventh-month new-moon day; the mean moon at midnight of the next new moon; the mean moon at midnight of the fixed quarter-moon and full moon; the civil fixed new moon at midnight entering rotation; fixed day at midnight entering rotation for quarter-moon, full moon, and subsequent new moon; the lunar degree at midnight for the fixed new moon, quarter-moon, and full moon. The methods follow the previous calendar; they are not recorded here.
62
Procedure for Gnomon Shadow and Clepsydra.
63
Solstice limit: 182, 63 minutes. Qiandao: minutes the same, 18 seconds. Chunxi and Huiyuan: the same.
64
Quadrant limit: 91, 31 minutes. The same for all three calendars: 9 seconds.
65
Message method: 12,211.
66
Double-hour divisor: 577½, totaling 8 quarters 231 parts. Qiandao: remainder 100. Chunxi: remainder 188. Huiyuan: remainder 129.
67
Dusk-and-dawn quarters: 346½. Qiandao: remainder 150. Chunxi: remainder 282.
68
Dusk-and-dawn remainder count: 173 and seven-eighths. Qiandao: dusk-and-dawn parts 750. Chunxi: dusk-and-dawn parts 141. Huiyuan: 967½.
69
Winter solstice gnomon shadow at Yue Terrace: 12 chi 8 cun 3 fen.
70
Summer solstice gnomon shadow at Yue Terrace: 1 chi 5 cun 6 fen.
71
Initial limit after the winter solstice and final limit after the summer solstice: 62 days. Minutes: none.
72
Initial limit after the summer solstice and final limit after the winter solstice: 120 days 62 minutes.
73
To find the fixed message numbers for each day: ecliptic departure from the pole and equatorial inner and outer degrees; dawn-and-dusk sunrise and sunset parts and half-day parts; daily distance from the mid-degree; fixed clepsydra at midnight; day and night quarters and sunrise and sunset double-hour quarters; watch and tally double-hour quarters; dusk and dawn degrees; the culminating star at the fifth watch tally-point; the nine domains' distance-difference days; the nine domains' gnomon shadows; and the day-and-night clepsydra quarters for each of the nine domains. The methods follow the previous calendar; they are not recorded here.
74
Procedure for Conjunction.
75
Conjunction cycle in parts: 188,580, 6,457 seconds. Qiandao: 816,366, 6,034 seconds. Chunxi: conjunction constant 153,476, 9,546 seconds. Huiyuan: conjunction rate 1,053,112, 2,140 seconds.
76
Conjunction cycle in days: 27, remainder 1,470, 6,457 seconds. Qiandao: remainder 6,366, 6,034 seconds. Chunxi: remainder 1,196, 9,542 seconds. Huiyuan: remainder 8,213, 2,140 seconds.
77
Mid-conjunction day: 13, remainder 4,200, 3,228½ seconds. Qiandao: remainder 18,183, 37 seconds. Chunxi: remainder 3,418, 4,771½ seconds. Huiyuan: remainder 23,456, 6,070 seconds.
78
New-moon difference: 2 days, remainder 2,206, 3,543 seconds. Qiandao: remainder 9,551, 1,566 seconds. Chunxi: remainder 1,795, 6,057 seconds. Huiyuan: remainder 12,320, 7,860 seconds.
79
Later limit: 1 day, remainder 1,113, 1,771½ seconds. Qiandao: remainder 4,775, 5,783 seconds.
80
Earlier limit: 12 days, remainder 3,097, 1,450 seconds. Qiandao: remainder 13,409, 7,234 seconds.
81
Full-moon interval: 14 days, remainder 5,303, 50 seconds. Qiandao: remainder 22,958, 8,800 seconds. Chunxi: remainder 4,316, 2,800 seconds. Huiyuan: remainder 29,637.
82
Conjunction rate: 42. Qiandao: 80. Chunxi: 61. Huiyuan: 507.
83
Conjunction number: 535. Qiandao: 1,019. Chunxi: 777.
84
Conjunction cycle in degrees: 363 degrees 76 minutes. Qiandao: 79 minutes, 40 seconds. Chunxi: the same. Huiyuan: minutes the same, 44 seconds.
85
Conjunction arc in degrees: 90 degrees 94 minutes. Qiandao: minutes the same, 85 seconds. Chunxi: the same. Huiyuan: minutes the same, 86 seconds.
86
Half-conjunction arc in degrees: 181 degrees 88 minutes. Qiandao: 45 degrees, 47 minutes, 42½ seconds. Chunxi: the same. Huiyuan: 42 seconds.
87
Solar eclipse limit: 2,745. Qiandao: 14,400. Chunxi: 2,630. Huiyuan: 18,000.
88
Solar eclipse fixed method: 274½. Qiandao: 1,440. Chunxi: 263.
89
Lunar eclipse limit: 4,585. Qiandao: 18,000. Chunxi: 3,240. Huiyuan: 22,500.
90
Lunar eclipse fixed method: 458½. Qiandao: 324.
91
Qiandao also has a lunar eclipse limit of 29,100; Chunxi 5,460; Huiyuan 36,000. Qiandao lunar eclipse fixed method 1,800; Chunxi 356. Qiandao lunar eclipse totality limit 11,100. Chunxi lunar eclipse totality limit 1,900.
92
滿宿
To calculate the generalized conjunction day at the hour of the civil eleventh-month new moon: find the generalized conjunction days for the next new moon and full moon; fixed new-moon and full-moon generalized conjunction at midnight; the next new moon at midnight entering the generalized conjunction day; canonical new-moon and full-moon entry into the regular conjunction day at the hour; canonical new-moon and full-moon entry into the fixed conjunction day at the hour; the moon's motion along the solar and lunar paths; canonical new-moon and full-moon entry into the accumulated degrees of the solar and lunar paths at the hour; the moon's departure from the ecliptic at the hour of canonical new moon and full moon; fixed remainder at greatest eclipse; the qi entered at greatest solar and lunar eclipse; central accumulation, qi difference, and quarter difference at greatest solar and lunar eclipse; the sun entering the eclipse limit; the sun entering the eclipse fraction; generalized applicable fraction for solar eclipse; the moon entering the eclipse limit; the moon entering the eclipse fraction; generalized applicable fraction for lunar eclipse; fixed applicable fraction for solar and lunar eclipse; minor remainders for the beginning of eclipse loss and restoration to fullness; inner and outer fractions for lunar eclipse totality; where solar and lunar eclipses begin; fixed method for lunar eclipse watches and tally-points; lunar eclipse entry into watches and tally-points; visible fractions when solar and lunar eclipses accompany rising and setting; and the lodge position at greatest solar and lunar eclipse. The methods follow the previous calendar; they are not recorded here.
93
Procedure for the Five Planets.
94
Five-planet conjunction interval: 15 degrees, 21 minutes, 90 seconds.
95
Jupiter cycle rate: 2,764,238, 32 seconds. Qiandao: 11,966,581, 55 seconds. Chunxi: cycle constant 2,249,715, 65 seconds. Huiyuan: cycle rate 15,436,834, 98 seconds.
96
Cycle in days: 398, reduced fraction 88, 79 seconds. Qiandao: 88 minutes, 60 seconds. Chunxi: reduced fraction 88, 57 seconds. Huiyuan: 88 minutes, 46 seconds.
97
Annual difference: 67, 98 seconds. Qiandao: cycle difference 1,008,864, 50 seconds. Chunxi: 189,741, 65 seconds.
98
Stationary-visibility degrees: 13.
99
Qiandao: calendar rate 10,957,249, 9 seconds. Chunxi: 2,059,981, 10 seconds. Huiyuan: 14,135,456, 9 seconds. Qiandao: calendar mid-degree 183 degrees, 63 minutes, 24 seconds. Chunxi: the same. Huiyuan: 86 seconds. Qiandao: calendar interval degree 15 degrees, 21 minutes, 85 seconds. Chunxi: the same. Huiyuan: 90 seconds.
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