From julian gregorian calendar - time date, September 1752 in north america. september 1752 in north america was exceptionally short, skipping the 11 days from the third to the 13th. ©timeanddate.com. The roman calendar - tondering, A total of 2930 days corresponding to an average of 366¼ days per year. this year was discovered to be too long, and therefore 7 days were later dropped from the 8th. Xkcd: 30 days hath september, This work is licensed under a creative commons attribution-noncommercial 2.5 license. this means you're free to copy and share these comics (but not to sell them)..
The christian calendar | calendars, A total 2930 days year 366¼ days. year discovered long, 7 days dropped 8th year. http://www.webexhibits.org/calendars/calendar-christian.html Early roman calendar | calendars, The romans borrowed parts earliest calendar greeks. calendar consisted 10 months year 304 days. romans . http://www.webexhibits.org/calendars/calendar-roman.html The 12 months year - time date, Calendar 12 months. gregorian calendar divided 12 irregular months. month 28, 30, 31 days common year, 365 days.. http://www.timeanddate.com/calendar/months/