Julian Calendar | SPAWAR Calendar |
Astronomer’s Julian Calendar | Theoretical Calendars |
Gregorian Calendar | Calendar Differences |
Herschel Calendar | Links |
Greek Orthodox Computer |
Julius Caesar created the modern calendar in 46 BC, which is distinct from the astronomer’s Julian calendar. Prior to that it was a mess well beyond your wildest dreams. The Julian calendar is still used by the Russian Orthodox church and by programmers who are ignorant of the official Gregorian calendar. It has leap years every four years without exception. It corrects to 365.25. It gets ahead
Perhaps some future earth citizens will drag the orbit of the earth slightly so no further adjustments will be necessary. More likely, sentient life will convert to a less terracentric calendar, perhaps time quanta since the big bang.
Differences Between Calendars | |||||
---|---|---|---|---|---|
year | Julian Leap? |
Gregorian Leap? |
Herschel Leap? |
Greek Leap? |
SPAWAR Leap? |
1 | no | no | no | no | no |
4 | yes | yes | yes | yes | yes |
1580 | yes | yes | yes | yes | yes |
1582 | no | no | no | no | no |
1584 | yes | yes | yes | yes | yes |
1600 | yes | yes | yes | no | yes |
1700 | yes | no | no | no | no |
1800 | yes | no | no | no | no |
1900 | yes | no | no | no | no |
1996 | yes | yes | yes | yes | yes |
1997 | no | no | no | no | no |
1999 | no | no | no | no | no |
2000 | yes | yes | yes | yes | yes |
2100 | yes | no | no | no | no |
2200 | yes | no | no | no | no |
2300 | yes | no | no | no | no |
2400 | yes | yes | yes | yes | yes |
2800 | yes | yes | yes | no | yes |
2900 | yes | no | no | yes | no |
3200 | yes | yes | yes | no | no |
3300 | yes | no | no | yes | no |
3600 | yes | yes | yes | no | yes |
3800 | yes | no | no | yes | no |
4000 | yes | yes | no | no | yes |
4200 | yes | no | no | yes | no |
4400 | yes | yes | yes | no | yes |
4700 | yes | no | no | yes | no |
4800 | yes | yes | yes | no | yes |
5100 | yes | no | no | yes | no |
5200 | yes | yes | yes | no | yes |
6400 | yes | yes | yes | no | no |
6500 | yes | no | no | yes | no |
6800 | yes | yes | yes | no | yes |
6900 | yes | no | no | yes | no |
7200 | yes | yes | yes | no | yes |
7400 | yes | no | no | yes | no |
7600 | yes | yes | yes | no | yes |
7800 | yes | no | no | yes | no |
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