Is the period of fasting during Ramadan from dawn to dusk or from sunrise to sunset? There can be quite a difference.
This year the Summer Solstice falls in Ramadan. This raises a number of interesting questions.
Far to the inhabited North there are several days when the sun never sets- Are there rules to deal with this since fasting 24/7 could be dangerous?
If it is Dawn to dusk how does the fact that for an even larger area of the Northern hemisphere the sun never falls below 18 degrees under the horizon. In Copenhagen it is 5 May to 8 August in Oslo even longer and even Paris is supposed to have a single 'Light night', as these nights are usually known.
It is reversed in the Southern hemisphere of course.
I ask these questions about Ramadan because I am curious as to possible health issues.