The International Version accounts for the Gregorian calendar reform in the year 1582.
The British Version accounts for the Gregorian calendar reform
in the year 1752.
| I have taken this calendar from a web site. The author asserts that he is fairly sure it is accurate. |
| In the calendar previous to the Gregorian Calendar Reform of 1582/1752, leap years are used differently. The current "Gregorian" calendar adds a leap year each 4 years except when the year is evenly divisible by 100, with the exception that years evenly divisible by 400 are leap years. The old style calendar added leap years every 4 years regardless. This was the reason for the Gregorian Reform. This has been taken this into account for this calendar. |
| If you want to find out more than you ever wanted to know about calendars, check out some of these sites: |
CalendarLand
Calendars and their History
10,000-Year Calendar!
Toke Nørby. The Perpetual Calendar
Virtual Calendars