Convert an Islamic calendar Hijri date ('the Islamic calendar. It started in the moon year in which prophet Mohammed immigrated from Makkah to Madinah') to the Gregorian date or vice versa. From a computer scientist.. (Copyright 2006 by Librarians' Internet Index)
'... interconvert dates in a variety of calendars, both civil and computer-related.' Includes Gregorian, Julian, Hebrew, Islamic, Persian, Mayan, Baha'i, Indian Civil, French Republican and other calendars.. (Copyright 2006 by Librarians' Internet Index)
An easy-to-understand scientific background on the concept of a leap year. Has illustrations and links to information on related astronomical events such as leap day, the calendar, seasons, vernal equinox, tropical year, century, and Gregorian, Iranian, and Julian calendrical systems. (Librarian's Internet Index). (Copyright 2006 by Librarians' Internet Index)
