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User:DennouNeko/Time test
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Disclaimer: This is highly experimental, purely speculational work, based on few uncertain dates from Gensokyo Timeline. It should serve at most for approximation of dates.
It uses Module:Timeconv for conversions between Gregorian date and Julian day, or between Julian day and Gensokyo's Lunisolar calendar.
Assumptions:
- Margin of error of dates specified at Gensokyo Timeline is no more than +/- 2 days
- Gensokyo uses luni-solar calendar (29.5 days per month).
- Season starts with uzuki month, so it's the 1st month (to make the calculations easier)
- There may be a leap month between 9th and 10th months (between Gregorian December and January). It's numbered as 13, so there may be seasons with month sequence: ...8, 9, 13, 10, 11...
Conversion verification
Original | Julian date | Converted |
---|---|---|
118/4/15 | 2452863.5 | 118/4/15 (Tuesday) |
118/13/29 | 2453172.5 | 119/1/29 (Wednesday) |
118/12/29 | 2453142.5 | 118/12/29 (Monday) |
118/12/30 | 2453143.5 | 118/12/30 (Tuesday) |
119/1/1 | 2453144.5 | 119/1/1 (Wednesday) |
119/5/14 | 2453275.5 | 119/5/14 (Monday) |
119/6/15 | 2453306.5 | 119/6/15 (Thursday) |
Time difference tests
Gregorian | Gensokyo | delta JD | corrected Gensokyo | |
---|---|---|---|---|
2003.08.12 | 118/4/15 | 0 | 118/4/15 (Tuesday) | |
delta | 270 | 271 | ||
2004.05.08 | 118/12/21 | -1 | 118/12/20 (Saturday) | |
delta | 10 | 10 | ||
2004.05.18 | 119/1/1 | -1 | 118/12/30 (Tuesday) | |
delta | 132 | 131 | ||
2004.09.27 | 119/5/14 | 0 | 119/5/14 (Monday) | |
delta | 32 | 31 | ||
2004.10.29 | 119/6/15 | 1 | 119/6/16 (Friday) |
Leap season test
Script error: The function "test" does not exist.
Month sequence test
- Regular season (117)
- 117, season of sun, summer and water
month: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
days: | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 29 | 30 | 30 | 29 |
- Leap season (118)
- 118, season of moon, autumn and wood
month: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
days: | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 29 | 30 | 29 | 30 |
Season 0 and current date
Calculations for: 2024.03.29 00:00 (GMT)
Current Gregorian date: | 2024.03.29 (Friday)) |
Current Gensokyo date: | 138/11/20 (Friday) |
0/1/1: | 1885.05.15 (Friday)) |