Hmm.. let me tell my experience in here in Dubai/UAE. When I first came to Dubai - it was in the Holy month of Ramadan.
1. The offices should strictly work till 2 PM. Violation will lead to canceling trade license, fines or both.
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Even though all this might effect non Muslims but believe me you have to live in Dubai/UAE/Saudi Arabia/Oman to expierence the festive spirit during the Holy month.