Eid Al Adha will be on Tuesday August 21 2018 in the Sultanate.
The announcement was made by Oman’s Ministry of Endowments and Religious Affairs online.
"Arafa Day will fall on Monday, August 20. Therefore, Tuesday August 21 will be the first day of Eid Al Adha. On this occasion, the Ministry of Endowment and Religious Affairs would like to extend their best wishes and congratulations to His Majesty Sultan Qaboos Bin Said." - Ministry of Endowments and Religious Affairs