Calendar converter - fourmilab, The islamic calendar is purely lunar and consists of twelve alternating months of 30 and 29 days, with the final 29 day month extended to 30 days during leap years.. Julian date calendar - mesa county, colorado, Day jan feb mar apr may jun jul aug sep oct nov dec day 1 001 032 060 091 121 152 182 213 244 274 305 335 1 2 002 033 061 092 122 153 183 214 245 275 306 336 2. The julian gregorian calendars - hermetic systems, The julian calendar, the gregorian reform and its adoption, astronomical year numbering, the julian and the gregorian proleptic calendars, and the accuracy of calendars..

From julian gregorian calendar - time date, Change julian gregorian calendar. gregorian calendar introduced 1582, 300 years countries . http://www.timeanddate.com/calendar/julian-gregorian-switch.html Julian day - wikipedia, Terminology. term julian date refer, astronomy, day--year number ( properly, ordinal date) gregorian calendar. https://en.wikipedia.org/wiki/Julian_day The christian calendar | calendars, What roman calendar? julius caesar introduced julian calendar 45 ..., roman calendar mess, -called "knowledge. http://www.webexhibits.org/calendars/calendar-christian.html