June 3, 2016 – mayan calendar 3 1/2 years, 144,000 days x 13 baktuns = 1,872,000 solar days. now the gregorian calendar solar year is 365.2425. the julian calendar solar year is 365.25. the haab mayan calendar.
When leap year? leap day? | , When leap year? find leap day, calculate leap years, leap year folklore, !. http://www.almanac.com/content/when-next-leap-year Hebrew calendar generator tool - christian biblical , Calendar generator calculating sabbath days biblical calendar research performed don roth. http://www.biblicalcalendarproof.com/calendar/generate Julian day - wikipedia, Julian day continuous count days beginning julian period primarily astronomers. julian day number (jdn) integer. https://en.wikipedia.org/wiki/Julian_day