For years, I've crossed distances to "do coffee" or "do lunch" or "take a walk with" friends by phone. It's a habit that I figured could help me cross time as well as distance.
Friend: Hey! I want to hear more about that thing you posted. How about we "do coffee", 9am my time tomorrow morning? I'll have coffee, you can have wine!
Me: That's perfect! Since your time changed, I think I'm 13 hours ahead, so that's... 8pm for me. Easy enough. See you then!
The next morning, on waking up:
10pm previous night...
Friend: Okay, I've tried calling, so I'm going sit by my computer and work on some stuff, and you just call me when you're ready.
Me: OH CRAP! When you said "tomorrow" I didn't think of the fact that your "tomorrow" is my "today"! I realized after we set the time, that it would be 10pm my time, not 8pm, and I was so happy that I realized it, that I forgot to think about the date! When can we reschedule coffee?
Friend: LOL. I get it. How about MY Friday morning. I'll be driving, so I can focus on our conversation.
*I check my planner*
Me: Oh good grief. Friday is the day I had marked for our call, even though I was planning for Thursday and it should have been Wednesday! Apparently I can't figure out time. Talk to you Friday morning, your time! Friday NIGHT, my time, LOL.
*After putting it in my phone calendar*
Me: I'm such a mess! I had the first time in my phone set for the correct night, but 8pm, which was my first - WRONG - guess about the time! I think I'm finally set for YOUR Friday morning. I really can't wait to give you all the details.
Me: It's my Friday morning, which means your Thursday night, right? So we'll talk when you wake up! I'm on it!
Friend: Bad news. Crisis at work, so I won't be free to call, and actually have a meeting at 7am tomorrow morning. Sorry!
Me: I'm SO SAD that I messed up our first scheduled time! Please let me know as soon as you have an idea when you can talk.
Conclusion: I suck at time travel.