Sure, an epoch timestamp can be translated to any time zone, but what was the original time zone? Consider these questions: Do I use Uber more often before or

Sure, an epoch timestamp can be translated to any time zone, but what was the original time zone? Consider these questions: Do I use Uber more often before or after noon? Is this a photo of a sunrise or a of a sunset? How late do I typically go to bed? In the case of Uber we could try to guess the time zone from the coordinates, but it's not trivial.