Computerphile did an excellent overview of time zones and all their complexities in the context of programming: https://www.youtube.com/watch?v=-5wpm-gesOY htt

Computerphile did an excellent overview of time zones and all their complexities in the context of programming: https://www.youtube.com/watch?v=-5wpm-gesOY https://www.youtube.com/watch?v=-5wpm-gesOY I was quite surprised by some of the stranger rules out there, especially the regions that chose to skip a day for whatever reason. Timezones are complex! Far, far more complex than simple offsets.