The Liberalia Triday Calendaris a proposal for Calendar Reform by Peter Meyer. It combines a solar calendar with a lunar calendar which have tridays (periods of 3 days) in common.
Both the solar and lunar calendars start year 0 on 17 March 1904.
The three days of the triday are named
- Sophiesday
- Zoesday
- Norasday
So 17 March 1904 is a Sophiesday. Its Julian day number is 2,416,557 which is divisible by 3, so the Sophiesdays are those days whose Julian day number is divisible by 3.
The lunar calendar gives a very rough indication of the moon phase, not only because every month is a whole number of tridays (either 30 or 27 days), but also because the short 27-day months are not as evenly spaced as possible. However spacing the short months as evenly as possible would give rise to either a more complicated calendar or one in which the lunar years have a variable number of months.
Dates[]
- Solar date
- ±M*CYYS-Q-T-D
- Lunar date
- ±C*C-YYYL-Q-T-D
A cycle consists of 384 lunar years, each 354 or 357 days long.
| Number | Name | Tridays | Days |
|---|---|---|---|
| 1 | Kamaliel | 30 | 90 |
| 2 | Gabriel | 31 | 93 |
| 3 | Samlo | 30 | 90 |
| 4 | Abrasax | 30 (31) | 90 (93) |
| Sum | 121 (122) | 363 (366) |
Abrasax only has 30 tridays if the solar year number plus one is divisible by 4 or by 198.
| Number | Name | Tridays | Days |
|---|---|---|---|
| 01 | Armedon | 10 | 30 |
| 02 | Nousanios | 10 | 30 |
| 03 | Harmozel | 10 | 30 |
| 04 | Phaionios | 10 | 30 |
| 05 | Ainios | 10 | 30 |
| 06 | Oraiel | 9 | 27 |
| 07 | Mellephaneus | 10 | 30 |
| 08 | Loios | 10 | 30 |
| 09 | Davithe | 10 | 30 |
| 10 | Mousanios | 10 | 30 |
| 11 | Amethes | 10 | 30 |
| 12 | Eleleth | 9 (10) | 27 (30) |
| Sum | 118 (119) | 354 (357) |
Eleleth has 9 tridays unless the lunar year number minus 2 is divisible by 8 and is not 2.
External link[]
- The Liberalia Triday Calendar by Peter Meyer.