691 |
days, the next five have 30 days, and the last has 29 in ordinary years |
days, the next five have 30 days, and the last has 29 in ordinary years |
692 |
and 30 in leap years. Leap years occur in a complicated pattern every |
and 30 in leap years. Leap years occur in a complicated pattern every |
693 |
four or five years. |
four or five years. |
694 |
|
The calendar implemented here is the arithmetical Persian calendar |
695 |
|
championed by Birashk, based on a 2,820-year cycle. It differs from |
696 |
|
the astronomical Persian calendar, which is based on astronomical |
697 |
|
events. As of this writing the first future discrepancy is projected |
698 |
|
to occur on March 20, 2025. It is currently not clear what the |
699 |
|
official calendar of Iran will be that far into the future. |
700 |
|
|
701 |
@cindex Chinese calendar |
@cindex Chinese calendar |
702 |
The Chinese calendar is a complicated system of lunar months arranged |
The Chinese calendar is a complicated system of lunar months arranged |