Arshan Standard Time (AST)
The standard universal calendar used by the United Arshan Federation
Initiated by vote shortly after the formation of the United Arshan Federation, this calendar is based upon the timescale of the planet DeArshin, which has roughly 29 hours in a day following the standard seconds/minutes/hours timescale. Due to the shortened orbit of DeArshan compared to Earth, the Arshan calendar has eight months, each at 38 days in length. An Arshan year lasts approximately 304 Arshan days
Prior to the creation of Arshan Standard Time, the colonists of DeArshin and Newearth struggled to find a balance between the traditional AD timekeeping they knew, and the orbital seasons and rotations of their respective planets.
Arshan years last 304 Arshan days (367 24-hour days following traditional time keeping), with a leap year to extend the calendar by two days, every five years. Each year has 8 months, each equaling 38 days in length, with the exception of November, which has 40 days during leap years.
As a calendar intended for universal use by a space faring nation, seasons do not exist in Arshan Standard Time. Instead, seasons are tracked on a per-planet basis.
Month names are copied over from the traditional Gregorian calendar, with four of the months removed (March, June, September, December). This allows an Arshan year to be evenly divided among eight months with 38 days each, for a more consistent calendar. During leap years, the last month of the year (November) has 40 days. The eight months are as follows:
Weeks in AST follow the standard 7 day format, with the same days as the Gregorian calendar. This kept day-to-day tracking of time more familiar for UAF citizens as they adapted to the new calendar.