I tried to have a discussion about this on reddit about how everyone should just use utc and he called me a lunatic because his working day would start at 3am instead of 8am, completely misunderstanding that utc 3am would be a different time to his current 3am and he just could not get his little head around it.
Whenever one of my closest friends (early 30s) needs help it's like helping my grandparents.