Review of the calendar calculations

• The Julian date
• The Egyptian calendar
• The Jewish calendar
• The calendar of the Maya
• The old Roman calendar
• The Numanian calendar
• The calendar of the Roman republic
• The calendar of Ptolemaios IIIrd Euergetes Ist
• The Julian calendar
• The Ethiopical calendar
• The Coptic calendar
• The Armenian calendar
• The old Persian calendar
• The Persian calendar
• The Islamic calendar
• The calendar of Yazdegar IIIrd
• The calendar of Omar Chayyam
• The Lilian date
• The Gregorian calendar
• The French revolutionary calendar
• The positivist calendar
• The modified Julian date
• The Cotsworth calendar
• The world calendar
• The truncated Julian date
• The Annus Novus Decimal Calendar
• The 13 month calendar from www.calendarreform.org
• The 12 month calendar I from www.calendarreform.org
• The 12 month calendar II from www.calendarreform.org
• The 12 month calendar III from www.calendarreform.org
• The Aristean perpetual calendar