Cycle Name | 1˚ cycle N = 12(30x) | 2˚ cycle | Remainder | Calendar type |
Egyptian civil “year” | 365 days | 1 Rise of Sirius in Egypt | +0.25 days | Dual calendar system |
Luniterranean year | 13 Moon orbit | 384 days (regular year) + pr | −0.10236 days | Dual calendar system |
Luniterraneane 309-lunation cycle | 9125 days | 309 lunations + pr | −0.048 days | Triple calendar system (Carlsberg 9 cycle) |
Egyptian 365-day 25-“year” cycle | 25 stellar rises + 25 pr | 25 (+0.25 days) |