I think the point is that people’s routine isn’t tied to sunrise. For example, in the summertime I start work about 4 hours after sunrise, and in the winter I start work 20mins after sunrise. The difference would actually be more dramatic without daylight savings With timezones and modern internet you don’t need to look up the offset at all, you just look up the current time in that zone and decide if that’s an appropriate time to call. Speaking as someone who deals with timezones a fair bit, both in work and personal life. And as someone who understands the headache of dealing with them in international computer systems, the time zone system is a very nice compromise. Though daylight savings need to die