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  2. List of adoption dates of the Gregorian calendar by country

    en.wikipedia.org/wiki/List_of_adoption_dates_of...

    There are only four countries which have not adopted the Gregorian calendar for civil use: Ethiopia (Ethiopian calendar), Nepal (Vikram Samvat and Nepal Sambat), Iran (Solar Hijri calendar) [1] and Afghanistan (Lunar Hijri Calendar). [2] Thailand has adopted the Gregorian calendar for days and months, but uses its own era for years: the ...

  3. 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.

  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. Rumi calendar - Wikipedia

    en.wikipedia.org/wiki/Rumi_calendar

    In the Islamic state of the Ottoman Empire, the religious Islamic calendar (a lunar calendar) was in use.In this calendar, months coincide with lunar phases.Because a "lunar year" (the combined duration of twelve lunar phases) is shorter than the solar year, the seasons cycle through the lunar months as the solar years pass.

  6. Fasli calendar - Wikipedia

    en.wikipedia.org/wiki/Fasli_calendar

    another document of fasliyear 1343 ic. AD 1933. Fasli Calendar is a chronological system introduced by the Mughal emperor Akbar basically for land revenue and records purposes in northern India, The differences in records dates due to the Muslim lunar calendar because of moon sighting have led him to introduce an alternate calendar which follows simultaneously with Islamic Lunar calendar and ...

  7. 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.

  8. Hijri year - Wikipedia

    en.wikipedia.org/wiki/Hijri_year

    The Hijri year (Arabic: سنة هجرية, romanized: sanat hijriyya) or era (Arabic: التقويم الهجري, romanized: at-taqwīm al-hijrī) is the era used in the Islamic lunar calendar. It begins its count from the Islamic New Year in which Muhammad and his followers migrated from Mecca to Yathrib (now Medina ) in 622 CE.

  9. Ethiopian calendar - Wikipedia

    en.wikipedia.org/wiki/Ethiopian_Calendar

    The Ethiopian calendar (Amharic: ዓውደ ወር; Ge'ez: ዓዉደ ወርሕ; Tigrinya: ዓዉደ ኣዋርሕ), or Geʽez calendar (Geʽez: ዓዉደ ወርሕ; Tigrinya: ዓዉደ ኣዋርሕ; Amharic: የኢትዮጲያ ዘመን ኣቆጣጠር) is the official state civil calendar of Ethiopia and serves as an unofficial customary cultural calendar in Eritrea, and among Ethiopians and ...