Kata > InternationalFixedCalendar

The International Fixed Calendar has 13 months, each of 28 days.

The months are January, February, March, April, May, June, Sol, July, August, September, October, November, December.

"Year Day" is a holiday inserted after 28th December and does not belong to any month.

In leap years, an extra day is inserted as 29th June, between 28th June and 1st Sol.

Convert between the Gregorian and International Fixed Calendar.