a place for friends (8)

instruments / chronology / derived/align_chunqiu_local.txt · raw

31 dated eclipse records over 242 reign-years; searching first-year = -1000..-442
271 computed solar eclipses (visible at [35.6, 117.0]) in -1000..-200

records 31 · grid 559 first-years × 60 phases = 33540 cells · null mean 0.05 · sd 0.39 · max 21
cells scoring ≥ 10: 6 · ≥ 20: 1
  first year =  -721 (BCE 722)  phase 49  matches 21/31  z=53.1
  first year =  -667 (BCE 668)  phase 33  matches 15/31  z=37.9
  first year =  -775 (BCE 776)  phase  5  matches 14/31  z=35.4
  first year =  -554 (BCE 555)  phase 59  matches 11/31  z=27.8
  first year =  -888 (BCE 889)  phase 39  matches 10/31  z=25.2
  first year =  -869 (BCE 870)  phase 59  matches 10/31  z=25.2
  first year =  -851 (BCE 852)  phase 14  matches  9/31  z=22.7
  first year =  -497 (BCE 498)  phase 29  matches  8/31  z=20.2

best cell: first year -721 (BCE 722), phase 49: 21/31 record by record
  NO  隱公  3 month  2 己巳 → year -719: no eclipse in that window
  ok  桓公  3 month  7 壬辰 → year -708: [(1462659, '壬辰', 'Par', 0.71)]
  ok  莊公 30 month  9 庚午 → year -663: [(1479137, '庚午', 'Par', 0.57)]
  ok  僖公  5 month  9 戊申 → year -654: [(1482415, '戊申', 'Par', 0.54)]
  NO  僖公 12 month  3 庚午 → year -647: no eclipse in that window
  ok  文公  1 month  2 癸亥 → year -625: [(1492810, '癸亥', 'Par', 0.59)]
  ok  文公 15 month  6 辛丑 → year -611: [(1498008, '辛丑', 'Par', 0.9)]
  NO  宣公  8 month  7 甲子 → year -600: no eclipse in that window
  NO  宣公 10 month  4 丙辰 → year -598: no eclipse in that window
  NO  宣公 17 month  6 癸卯 → year -591: no eclipse in that window
  ok  成公 16 month  6 丙寅 → year -574: [(1511533, '丙寅', 'Par', 0.95)]
  ok  成公 17 month 12 丁巳 → year -573: [(1512064, '丁巳', 'Par', 0.47)]
  NO  襄公 15 month  8 丁巳 → year -557: no eclipse in that window
  ok  襄公 20 month 10 丙辰 → year -552: [(1519683, '丙辰', 'Par', 0.02)]
  ok  襄公 21 month  9 庚戌 → year -551: [(1520037, '庚戌', 'Par', 0.4)]
  NO  襄公 21 month 10 庚辰 → year -551: [(1520037, '庚戌', 'Par', 0.4)]
  ok  襄公 23 month  2 癸酉 → year -549: [(1520540, '癸酉', 'Ann', 0.88)]
  ok  襄公 24 month  7 甲子 → year -548: [(1521071, '甲子', 'Tot', 1.0)]
  NO  襄公 24 month  8 癸巳 → year -548: [(1521071, '甲子', 'Tot', 1.0)]
  NO  襄公 26 month 12 乙卯 → year -546: [(1521927, '庚辰', 'Par', 0.8)]
  ok  昭公  7 month  4 甲辰 → year -534: [(1526091, '甲辰', 'Par', 0.12)]
  ok  昭公 15 month  6 丁巳 → year -526: [(1529044, '丁巳', 'Par', 0.83)]
  NO  昭公 17 month  6 甲戌 → year -524: no eclipse in that window
  ok  昭公 21 month  7 壬午 → year -520: [(1531289, '壬午', 'Par', 0.57)]
  ok  昭公 22 month 12 癸酉 → year -519: [(1531820, '癸酉', 'Par', 0.59)]
  ok  昭公 24 month  5 乙未 → year -517: [(1532322, '乙未', 'Par', 0.57)]
  ok  昭公 31 month 12 辛亥 → year -510: [(1535098, '辛亥', 'Par', 0.27)]
  ok  定公  5 month  3 辛亥 → year -504: [(1537018, '辛亥', 'Par', 0.52)]
  ok  定公 12 month 11 丙寅 → year -497: [(1539793, '丙寅', 'Par', 0.65)]
  ok  定公 15 month  8 庚辰 → year -494: [(1540827, '庚辰', 'Par', 0.48)]
  ok  哀公 14 month  5 庚申 → year -480: [(1545847, '庚申', 'Par', 0.67)]

check: first year -721 scores 21/31 at phase 49; rank among all cells: 1

conventional: first year -721 (BCE 722), phase 49: 21/31 record by record
  NO  隱公  3 month  2 己巳 → year -719: no eclipse in that window
  ok  桓公  3 month  7 壬辰 → year -708: [(1462659, '壬辰', 'Par', 0.71)]
  ok  莊公 30 month  9 庚午 → year -663: [(1479137, '庚午', 'Par', 0.57)]
  ok  僖公  5 month  9 戊申 → year -654: [(1482415, '戊申', 'Par', 0.54)]
  NO  僖公 12 month  3 庚午 → year -647: no eclipse in that window
  ok  文公  1 month  2 癸亥 → year -625: [(1492810, '癸亥', 'Par', 0.59)]
  ok  文公 15 month  6 辛丑 → year -611: [(1498008, '辛丑', 'Par', 0.9)]
  NO  宣公  8 month  7 甲子 → year -600: no eclipse in that window
  NO  宣公 10 month  4 丙辰 → year -598: no eclipse in that window
  NO  宣公 17 month  6 癸卯 → year -591: no eclipse in that window
  ok  成公 16 month  6 丙寅 → year -574: [(1511533, '丙寅', 'Par', 0.95)]
  ok  成公 17 month 12 丁巳 → year -573: [(1512064, '丁巳', 'Par', 0.47)]
  NO  襄公 15 month  8 丁巳 → year -557: no eclipse in that window
  ok  襄公 20 month 10 丙辰 → year -552: [(1519683, '丙辰', 'Par', 0.02)]
  ok  襄公 21 month  9 庚戌 → year -551: [(1520037, '庚戌', 'Par', 0.4)]
  NO  襄公 21 month 10 庚辰 → year -551: [(1520037, '庚戌', 'Par', 0.4)]
  ok  襄公 23 month  2 癸酉 → year -549: [(1520540, '癸酉', 'Ann', 0.88)]
  ok  襄公 24 month  7 甲子 → year -548: [(1521071, '甲子', 'Tot', 1.0)]
  NO  襄公 24 month  8 癸巳 → year -548: [(1521071, '甲子', 'Tot', 1.0)]
  NO  襄公 26 month 12 乙卯 → year -546: [(1521927, '庚辰', 'Par', 0.8)]
  ok  昭公  7 month  4 甲辰 → year -534: [(1526091, '甲辰', 'Par', 0.12)]
  ok  昭公 15 month  6 丁巳 → year -526: [(1529044, '丁巳', 'Par', 0.83)]
  NO  昭公 17 month  6 甲戌 → year -524: no eclipse in that window
  ok  昭公 21 month  7 壬午 → year -520: [(1531289, '壬午', 'Par', 0.57)]
  ok  昭公 22 month 12 癸酉 → year -519: [(1531820, '癸酉', 'Par', 0.59)]
  ok  昭公 24 month  5 乙未 → year -517: [(1532322, '乙未', 'Par', 0.57)]
  ok  昭公 31 month 12 辛亥 → year -510: [(1535098, '辛亥', 'Par', 0.27)]
  ok  定公  5 month  3 辛亥 → year -504: [(1537018, '辛亥', 'Par', 0.52)]
  ok  定公 12 month 11 丙寅 → year -497: [(1539793, '丙寅', 'Par', 0.65)]
  ok  定公 15 month  8 庚辰 → year -494: [(1540827, '庚辰', 'Par', 0.48)]
  ok  哀公 14 month  5 庚申 → year -480: [(1545847, '庚申', 'Par', 0.67)]

back to chronology