Eid Al Adha 2019 Holidays in Oman Calendar When: August 11, 2019 all-day Repeats 2019-08-11T00:00:00+04:00 2019-08-12T00:00:00+04:00 Holidays Eid Al Adha 2019 Holidays in Oman are from Sunday 11 August 2019 to Thursday 15 August 2019.