I guess it's not worth the headache having your own clock if you want to deal with the rest of the world, but in S. Arabia it was once common to set your watch

I guess it's not worth the headache having your own clock if you want to deal with the rest of the world, but in S. Arabia it was once common to set your watch to 6 am at sunrise: https://github.com/eggert/tz/blob/43dbb43381487a253fdc4462c0bdce073f79e286/asia#L3537 https://github.com/eggert/tz/blob/43dbb43381487a253fdc4462c0...