Monday’s iftar will be the last meal to break the fast in Saudi Arabia.
UAE will also celebrate the first day of Eid Al Fitr on Tuesday.
On Sunday, Saudi Arabia announced that it will observe the crescent moon on Monday.
Other countries announced that they will celebrate Eid Al Fitr on Wednesday, including Tunisia, Australia, Indonesia, and the Philippines.
Celebrations will start with Eid Al Fitr prayers, which will star after Al Fajr (dawn) prayers.
After the prayers, families will gather to eat their first breakfast in the morning after a whole month of fasting from dawn to sunset.
In addition to the religious events, Saudi Arabia also announced a series of concerts to celebrate Eid Al Fitr.
The Gulf country will host one of the biggest Eid festivals in the Middle East, convening 13 singers from across the region by the end of the week.
News outlet MenaFN reported that Egyptian singers Angham and Mohamed Hamaky are among the artists who will perform during the festival. The festival line up also includes Hussein Al Jasmi, Hussein Al-Jasmy, Asala, Abdullah Al-Rweshid, Nawal El-Zoghby, and Ramy Abdullah.
Morocco will observe the crescent of the month on Tuesday, meaning Eid will take place in onWednesday, astronomer Abdelaziz Kharbouch Al Ifrani told Morocco World News.