Donit - 2 Moons
Yestarv
Keshet - 8 Moons
Oerth / Hollow World System
Oerth 365 day year. 12 months of 30 day months, with 5 leap
days festival
Kule
Raenei
Liga (The sun)
The Grinder
Edill
Gnibile
Conatha
Ginsel
Borka
Greela
The Spectre
Sol System
Mercury
Venus
Earth - 1 Moon 28 day Period
12 Months of unequal days - 1 leap day in February
January - 31
February - 28
March - 31
April - 30
May - 31
June - 30
July - 31
August - 31
September - 30
October - 31
November - 30
December - 31
Mars - 2 Moons
Jupiter - 12 Moons
Saturn - Rings - 10 Moons
Uranus - 5 Moons
Neptune - 1 Moon
Pluto
Kyrnn System
Sirion
Reorx - 1 moon
Krynn - 3 Moons
Chislev
Zivilyn - 12 Moons
| Month Name | Colloquial Description |
| Hammer | Deepwinter |
| HOLIDAY - Midwinter | High Winter Festival |
| Alturiak | The Claw of Winter or Cold |
| Ches | of the Sunsets |
| Tarsakh | of the Storms |
| HOLIDAY - Greengrass | Begining of Spring Festival |
| Mirtul | The Melting |
| Kythorn | TheTime of Flowers |
| Flamerule | Summertide |
| HOLIDAY - Midsummer | Lone Nitght |
| Eliasias | Highsun |
| Elient | The Fading |
| HOLIDAY -Higharvestide | Fall Feast |
| Marpenoth | Leafall |
| Uktar | The Rotting |
| HOLIDAY - Moonfest | Feast of the Moon |
| Nightal | The Drawing Down |
Grawk
Year=364 days, Moon Luna=the Mistress, Large Moon Period=28 Days
Moon Celene = Handmaiden, Small Moon Period=91 days (4 orbits per year)
Days of the week:
Starday - Work
Sunday - Work
Moonday - Work
Godsday - Worship
Waterday - Work
Earthday - Work
Freeday - Rest
Each Month is 28 days long and each festival is 7 days long
| Common | Olven | Nomads |
| FESTIVAL | Needfest | 7 Days Long |
| Fireseek | Diamond Ice | Tiger |
| Readying | Yellowillow | Bear |
| Coldeven | Snow Flowers | Lion |
| FESTIVAL | Growfest | 7 Days Long |
| Planting | Blosoms | Frog |
| Flocktime | Violets | Turtle |
| Wealsun | Berrytime | Fox |
| FESTIVAL | Richfest | 7 Days Long |
| Reaping | Goldfields | Snake |
| Goodmonth | Sun Flowers | Boar |
| Harvester | Fruitfall | Squirrel |
| FESTIVAL | Brewfest | 7 Days Long |
| Pachwall | Brightleaf | Hare |
| Ready'reat | Tingling Ice | Hawk |
| Sunseb | Lacy Snows | Wolf |
For more information see: Selvor the Eldar "Secrets of Ye Skye Revelaled" and Yestro Bilnigd "Astrology, Divinity and Mankind".
Tefnut
Year = 482 days Moon Do, Fa, Me, Ra 123 days
12 months of 123 days with a holliday every other month
Gogblig
Bolog
Holiday - Shu
Pulob
Popug
Holiday - Wata'Ru
Lolok
Kopug
Holiday - Ocanthus
Akulg
Pukog
Holiday - The Reaping
Goblok
Gakak
Holiday - Cuthulu
Kolukob
Bokulk
SECONDARY SYSTEM
Seker - Northern Hemisphere
Year = 670 days, Moon Phoebos 23 day rotation - Moon Deimos, Month=67
days
50 tals = 1 tak
4 taks = 1 xat
50 xats = 1 zode
10 zodes = 1 padan (day)
67 padans = 1 teean (month)
10 teeans = 1 ord (year)
Months are numbered, not named and date are given numerically as "Sixtyfive
Nine"
Greld
Year=365 days, Moon Klee Month = 28 days, Moon Roon - Rotation=57 days
13 months of 28 days each. Week = 7 days
Months are not named. Dates are expressed in numbers as in "Eleven
Fourteen" for month day.
Tekumel
Year=365 Days Month = 30 days
Gayel=Green Moon 30 Day orbit
Kashi=Red Moon 15 Day orbit
Each month is devided into 5 weeks of 6 days each
| FESTIVAL - Tlashanyal 5 days long | FESTIVAL 1 per 4 years
Kolumehagi 1day long |
| Hasanpor | Starts on Spring Equinox |
| Shapru | |
| Didom | |
| Langala | |
| Fesru | |
| Drengar | |
| Firasul | |
| Pardan | |
| Halir | |
| Trantor | |
| Lesdrim | |
| Dohala |
Isis Calendar
Year = 308 days Moon Haforld Month=28 days
11 months per year
| Muspel |
| Blerin |
| Ossa |
| Merkur |
| Meduso |
| Airlu |
| Avernus |
| Bob |
| Nefelhigh |
| Cathries |
| Morteus |
| Cathries |
| Morteus |
Days of the week never change from month to month or year to year.
Days of the Week
| Week
Name |
Monoday | Duoday | Trayday | Kaday | Kintday | Sepday | Restday |
| Onik | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Doik | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Traik | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Forik | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
Dates are commonly given as "Avernus Doik Kintday" for Avernus 12th