Earlier this week, Religion News Service ran an intriguing story by a Reuters reporter about Muslims who live in far northern latitudes and their struggles to keep the Ramadan fast when daylight stretches for nearly 24 hours. 

Personal note: For the past year, I’ve lived in Alaska, where daylight is as little as two hours in the winter and is now at 22 hours. From my perch in Fairbanks, the sun sets at 12:45 a.m. and rises at 2:58 a.m. It’s a tad hard to sleep when you get a blast of sunshine (even through closed blinds) at 3 a.m. Last week, I visited Prudhoe Bay, where at 70º latitude, the sun never sets from May 20 to July 22. It’s beyond weird to go to bed there in broad daylight.

So here you have a religion founded in latitudes close to the equator where huge swings in hours of daylight aren’t an issue. But what happens when that religion expands to the north and south? As the story says:

(RNS) When the Islamic fasting month of Ramadan begins later this week, some Muslims around the world will face bigger challenges than others. The Quran is clear that the fast should last from before dawn to after dusk but says nothing about how many hours that might be.

Since Islam has spread from its Arabian heartland to the far reaches of the Earth, Muslims who live farther north must fast several hours longer than those in Mecca. On the year’s longest day, June 21, some could end up fasting for as long as 20 hours.

Usama Hasan, a British Islamic scholar, thinks this makes Ramadan fasting unbearable for many Muslims living in Northern Europe and Canada, especially the old and children just beginning to observe the practice. It also prompts many Muslims to give up fasting altogether during the summer, he said, or sneak a secret snack to help them get through the long days.