Earlier quoted context omitted.
The islamic 40 day fasting is exactly like that and it’s fun to entertain the idea of fasting close to the poles. The fasting dates are determined by the moon calendar so it moves between extremely easy and extremely hard. Do you know if the muslims are actually going through it on hardcore level or have some kind of rationalisation for not doing it or a cheating method like sleeping all day?
According to traditional scholars from the four schools of thought, Muslims who live near the poles and either have the sun all day or darkness all day follow the timings for both the five daily prayers, and the times to open and close the fast as well as the dates of when fasting starts and finishes of their nearest neighbouring country which has sunset and sunrise.
That said, I don't know much about religion practices. Maybe the precision timing is a Turkish thing.