Taking into consideration long or short duration of daytime, how should fast be observed in both cases?

Question 3: The Muslim World League received a message from Shaykh Muhammad Dayr Manja, its envoy in Copenhagen, Denmark, saying that in some parts of the Scandinavian countries, the day is much longer than the night, depending on the time of year. The night may be only three hours long, while the day is twenty-one hours. If Ramadaan comes in the winter, the Muslims fast for only three hours, but if it comes in the summer, they do not fast because they are not able to, as the day is too long. Shaykh Dayr Manja asked for a Fatwaa fixing the time of Iftar (breaking the Fast), Suhr (pre-dawn meal before the Fast), and the period during which the Sawm (Fast) of Ramadan is due to make it known to the Muslims in these countries. I ask you to issue a legal statement to this effect so that I can provide him with the right answer.

Answer: After studying the matter in question, the committee answered as follows:

Islaam is perfect and comprehensive. Allaah (Exalted be He) says, “This day, I have perfected your religion for you, completed My Favour upon you, and have chosen for you Islaam as your religion.” And said, Say (O Muhammad صلى الله عليه وسلم): “What thing is the most great… read more here.