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  2. Hijri year - Wikipedia

    en.wikipedia.org/wiki/Hijri_year

    The Hijri era is calculated according to the Islamic lunar calendar, whose epoch (first year) is the year of Muhammad's Hijrah, and begins on the first day of the month of Muharram (equivalent to the Julian calendar date of July 16, 622 CE). [2] [b] The date of the Hijrah itself did not form the Islamic New Year.

  3. List of Islamic years - Wikipedia

    en.wikipedia.org/wiki/List_of_Islamic_years

    This is a list of Hijri years (Latin: anno Hegirae or AH) with the corresponding common era years where applicable. For Hijri years since 1297 AH (1879/1881 CE), the Gregorian date of 1 Muharram , the first day of the year in the Islamic calendar , is given.

  4. Islamic calendar - Wikipedia

    en.wikipedia.org/wiki/Islamic_calendar

    Islamic calendar stamp issued at King Khalid International Airport on 10 Rajab 1428 AH (24 July 2007 CE). The Hijri calendar (Arabic: ٱلتَّقْوِيم ٱلْهِجْرِيّ, romanized: al-taqwīm al-hijrī), or Arabic calendar, also known in English as the Muslim calendar and Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days.

  5. Hijri calendar - Wikipedia

    en.wikipedia.org/wiki/Hijri_calendar

    The term Hijri calendar has more than one meaning. There are three calendars that have the Hijrah as their epoch. In most Islamic countries The Islamic calendar, the lunar Hijri calendar based on actual lunar observation.

  6. Tabular Islamic calendar - Wikipedia

    en.wikipedia.org/wiki/Tabular_Islamic_calendar

    Though less accurate than the tabular calendars based on a 30-year cycle, it was popular due to the fact that in each cycle the weekdays fall on the same calendar date. In other words, the 8-year cycle is exactly 405 weeks long, resulting in a mean of exactly 4.21875 weeks per month.

  7. Iranian calendars - Wikipedia

    en.wikipedia.org/wiki/Iranian_calendars

    This change was reversed slightly more than two years later, on September 2, 1978 (11 Shahrivar 2537, which became 11 Shahrivar 1357), in the wake of civil unrest preceding the Iranian revolution, and the calendar reverted to Solar Hijri. [8] [9] Correspondence of Solar Hijri and Gregorian calendars (Solar Hijri leap years are marked *): [10]

  8. Solar Hijri calendar - Wikipedia

    en.wikipedia.org/wiki/Solar_Hijri_calendar

    The calendar's epoch (first year) corresponds to the Hijrah in 622 CE, which is the same as the epoch of the Lunar Hijri calendar but as it is a solar calendar, the two calendars' year numbers do not coincide with each other and are slowly drifting apart, being about 43 years apart as of 2023.

  9. Conversion between Julian and Gregorian calendars - Wikipedia

    en.wikipedia.org/wiki/Conversion_between_Julian...

    For unlisted dates, find the date in the table closest to, but earlier than, the date to be converted. Be sure to use the correct column. If converting from Julian to Gregorian, add the number from the "Difference" column. If converting from Gregorian to Julian, subtract.