This is actually a weird quirk of mine but I try very hard to, if I have a meeting scheduled at e.g. 2pm, to show up at exactly 2pm according to my cell phone, which is more likely to display the same time as their cell phone. Same if I'm visiting somebody's house; if they tell me to show up at 8pm, I'm likely to walk slowly from my car so I can be knocking at their door right as the time switches over from 7:59. Unless they're a very good friend of mine and I'm confident they won't mind me being there early.

The way around this is for people to tell me to show up "around" 8pm or whenever.

I fully recognize that this is something peculiar to myself, and I would never begrudge anybody else for showing up at e.g. 2:04 for a 2pm meeting. But I would definitely apologize for being a few minutes late if I did the same.