In Leningrad There Are About Four Months Where the Night is Very Long, It Goes to About Twenty Hours, How is The Prayer Performed?
by The Albaani Site
Questioner: In Leningrad there are about four months where the night is very long, it goes to about twenty hours, and the day is about four hours long, and vice versa, so how is the prayer [to be performed]?
Al-Albaani: They estimate the prayer times in accordance with the closest city/country to them in which the sun rises and sets in a normal manner.
But I will say something [to clarify the above]: the answer [I just gave] is for a country where it’s not possible for the five [prayer] times to be expected to be seen even if they are close—if these five prayer times cannot be realised then the answer is as I mentioned just now, they estimate the five times in accordance with the closest city/country to them in which the five times are [clearly] present.
Al-Hudaa wan-Noor, 57.