Due to the fact that the number of hours from Fajr prayer to Maghrib prayer or from Suhoor time to Iftar time is not the same in different countries, residents of some countries refrain from eating and drinking longer, and some have to fast for several hours less.
In most countries of the world, fasting time is about 12-16 hours. The UAE is located approximately in the middle of this gap. Residents of the UAE are not in the worst position compared to other countries. For example, on the first day of Ramadan in 2019, fasting time in Dubai was 14 hours and 39 minutes. The longest fast is in Murmansk, Russia (20 hours 45 minutes), Reykjavik, Iceland (19 hours 26 minutes) and Lulea, Sweden (19 hours 43 minutes), and the least sunny time of the day lasts in Rio de Janeiro, Brazil (12 hours 28 minutes), Santiago, Chile (12 hours 4 minutes) and Ushuaia, Argentina (11 hours).
If the day or night, as in the case of the polar day and night, are continuous, and the Muslim who is currently in this area wants to observe Ramadan, then there are several basic options. It is possible to adhere to the time of sunrise and sunset in the nearest city in which they are observed, often the basis of fasting is Mecca time, some Islamic scholars also recommend adhering to the time of the country of origin, there is also an opinion that a Muslim should fast a fixed number of hours per day — exactly 20 hours.
O Allah, on this day, do not condemn me for slips, make me decrease mistakes and errors, do not make me a target for afflictions and troubles, by Your honor, O the honor of the Muslims.