Arvelie is an alphabetic date format.
The Arvelie calendar has 26 months of 14 days each.
Each month has 2 weeks of 7 days, and each month's name is one of the 26 letters of the alphabet. The 365th day of the year is the Year Day(+01), preceded by the Leap Day(+02) on leap years.
- 02A01 2002-01-01
- 01D07 2001-02-18
- 13B12 2013-01-26
- 02E07 2002-03-04
- 24C01 2024-01-29
- 03+01 2003-12-31
To calculate the day of the year, convert the month's letter to a value, starting with 0 for A, multiply by 14 and add the day of the month. For example, J05 is equal to (+ 5 (* 9 14)), or 131.