South African Muslims however have it easy for the next few years.btw, Ramadan was clearly designed for countries closer to the equator than we are. It wasn't meant to be that tough. I don't know how muslims in Reykjavik (for instance) are going to survive the next 3 or 4 years.
As you say, it was not designed for countries to far from the equator, Mohammed (and the religions that preceded him,) designed their fasting period for the time of the year when you have the least amount of crops, so Ramadan, Yom Kippur and Lent should all be fixed for spring equinox, so 21st of 'March in the northern hemisphere and the 21st of September in the Southern Hemisphere and for those on the equator perhaps it should be timed with the monsoon/rainy season