“The World Season Calendar (WSC) is a proposal for calendar reform by author Isaac Asimov. In...World Season Calendar
“The fictional Christian Calendar, also known as Biblical Calendar, originally is an adapted...Christian Calendar
“The International Standard Calendar is based upon the rules laid out in the international...International Calendar
“The World Calendar is a proposed reform of the Gregorian calendar created by Elisabeth Achelis...World Calendar
“The Long-Sabbath Perennial Calendar is a calendar reform suggrested by Rick McCarty, in 1996. It...Long-Sabbath Perennial Calendar
This category has only the following subcategory.
- [+] Leap Week Calendars (2 C, 34 P, 3 F)
Pages in category "Perpetual calendars"
The following 20 pages are in this category, out of 20 total.