Thursday 17 May will be the first day of the Holy Month of Ramadan in UAE, the country's Moon-Sighting Committee announced on Tuesday evening. The announcement was made after it was established that Wednesday 16 May completes the month of Sha'ban 1439 AH, and Thursday is the first day of the Holy Month.
In a statement issued following the meeting at the Judiciary Department on Tuesday evening, Sultan bin Saeed Al Badi Al Dhaheri, Minister of Justice, Chairman of the committee, said that "After investigation and following the legal ways of proof and communications with neighbouring countries, where the Holy Month's crescent moon was not sighted tonight, it has been decided that tomorrow, Wednesday, completes the month of Sha'ban and Thursday is the first day of Ramadan."
Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai, posted an Instagram story - announcing that Ramadan will begin on Thursday (May 17) this year. https://www.instagram.com/stories/faz3/
The working hours during the Holy Month of Ramadan are reduced to accommodate those who fast during the month. According to the Federal Authority for Government Human Resources, working hours for the public sector employees will be from 9am - 2pm, whereas working hours for the private sector are reduced by two hours.
See the parking hours during Ramadan in Dubai.