I had a lady from a local group who wanted to meet me at the makerspace I lead to check the place out. I was happy to meet her, I said sure I'm not doing anything Wednesday, how about 7? Awesome! We email confirmed and all was well.
Wednesday I get off work and head there but check my makerspace email really quick to see if anything had changed, and OMG, I had a dozen emails from her because SHE THOUGHT I MEANT 7AM! Where are you, I'm here, it's cold and dark outside, there's no one to let me in, I guess we have to reschedule, etc etc etc.
Okay, I have two life advices. First, never assume the AM/PM thing.
Second, if you are meeting someone in the real world, be sure to exchange all best forms of contacting you directly? We can email all day, but it's time to exchange cell phone numbers! Anything can happen - cancellation, flat tire, confusion over the time (obvs). Under the context of "if anything comes up", give out your cell phone. Or some other form of contact that you know can really get your attention.
We were actually not able to reschedule. I think she was very unhappy.