Islamic holiday at the end of Ramadan, first day of Shawwal
Eid al-Fitr ( EED əl FIT-ər, -rə; Arabic: عيد الفطر, romanized: ʿĪd al-Fiṭr, IPA: [ʕiːd al ˈfɪtˤr]) is the earlier of the two official holidays celebrated within Islam (the other being Eid al-Adha). Eid al-Fitr is celebrated by Muslims worldwide because it marks the end of the month-long dawn-to-dusk fasting of Ramadan. Eid al-Fitr falls on the first day of Shawwal in the Islamic calendar; this does not always fall on the same Gregorian day, as the start of any lunar Hijri month varies based on when the new moon is sighted by local religious authorities.
https://en.wikipedia.org/wiki/Eid_al-Fitr
Eid al-Fitr ( EED əl FIT-ər, -rə; Arabic: عيد الفطر, romanized: ʿĪd al-Fiṭr, IPA: [ʕiːd al ˈfɪtˤr]) is the earlier of the two official holidays celebrated within Islam (the other being Eid al-Adha). Eid al-Fitr is celebrated by Muslims worldwide because it marks the end of the month-long dawn-to-dusk fasting of Ramadan. Eid al-Fitr falls on the first day of Shawwal in the Islamic calendar; this does not always fall on the same Gregorian day, as the start of any lunar Hijri month varies based on when the new moon is sighted by local religious authorities.
