Definition
There are
Name |
Description |
|---|---|
Basic/None |
Must be corrected for all months less than 31 days. The cheapest, as it always just counts to 31. |
Annual calendar |
Handles 30 & 31-day months, must be corrected once per year for Februrary. |
Perpetual |
Correct for 4 years, must be corrected for leap years. |
Secular calendar |
Correct for 100 years or more, handles leap years. |