The Lewisian Calendar is a system of time measurement, based on the arrival of the Twelve Colony Ships of the Forefathers into the Lewis Galaxy scaping the devastation of the War of the Decamillenial Transition. This event is of great importance to the Lewis Nations at it marks the beginning of their civilizations. The Landing Date, the day the colony ships arrived into Elpida and effectively landed, was set as the turning point. Thus this year and day is consider the year 0 of the Calendar.
The Landing date, or the year O LD corresponds to May 6th 20,166 of the Common Era. The years and months are the same as the common calendar, the only deviation is its starting point. This is the main used calendar in the Lewis Nations, Herschel Space. However, it is used alongside the standard calendar, most notably for official purposes. The use of this calendar is widely spread and common among all Lewisians no matter the Nation they come from, It is sometimes even used by some of the Alien races living within the Lewis Nations.
All events happening after the Landing Day ( 0 LD) are marked as BLD (Before Landing Date) while the events happening after it are marked as ALD (After Landing Date).
The Landing Date: is a common holiday and festivity all over the Lewis Nations. It is common for all Humans to gather together and celebrate with family with a big dinner. Special and traditional foods are cooked and by the end of the day, they exchange gifts with each other. This festivity is the only "free day" slaves have, as no slave work is allowed during the day, being a day of sharing. The streets covered with celebrations and parades as well commemorating the forefathers.
Current Date: 79 834 ADL (100 000 CE)
Common equivalents are:
- 8,462 ADL (28,648 CE): The founding of the Empire of Mankind.
- 13,790 ADL (33,956 CE): The founding of the Plutocracy of Gish.
- 15,024 ADL (35,190 CE): The founding of the Union.
- 25,212 ADL (45,378 CE): The founding of the Intergalactic Federation (as the Lewis Federation).
- 27,399 ADL (47,565 CE): The founding of the United Alliance.
- 34,840 ADL (55,006 CE): The founding of the Republic of Sion.
- 5,324 ADL - 5,511 ADL (25,490CE - 25,677 CE): First Civil War of the Empire
- 8,144 ADL - 8,482 ADL (28,310 CE - 28,648 CE) Second Civil War of the Empire
- 13,414 ALD - 13,789 ALD ( 33,580 CE - 33,955 CE): Nobility War
- 14,554 ADL - 15,022 ADL (34 720 CE - 35 188 CE): Great Slave Revolt
- 15,744 ADL - 16,035 ADL ( 35,910 CE - 36,201 CE): The War of the Two Emperors
- 23,165 ADL - 23,222 ADL (43,331CE - 43,388 CE): First Relative's War
- 23,963 ADL - 24,027 ADL (44,129 CE - 44,193 CE): Second Relative's War
- 24,866 ADL - 25,421 ADL (45,032 CE - 45,587 CE): Imperial-Unionist War
- 26,814 ADL - 26,890 ADL (46,980 CE - 47,056 CE): Third Relative's War