Yesterday my grandma and I had a conversation about time zones, which started when it came up that China spans several time zones but only uses one (UTC+8). We started talking about how that was unusual, and I put forth the idea that things would be less confusing without time zones, i.e. if everyone used UTC.
With the current system, 8:00 in California is three hours after 8:00 in New York. You can be talking to someone, live, who is “already in tomorrow”. How does this make sense?
On the flip side, 8:00 local time tells you something…