Funnily enough, I just got a bunch of one hour computer schedule changes for a European event in late March. I assume this is related to Daylight Savings vs. Standard Time. I'm sure I'll work it out once I'm over there.
Totally. You have the local time at the time of the event, you have current US time, and you have current European time. Yes, computers can handle a lot of this but a lot of people are working off the local times for the event--and I've had a ton of schedule corrections that I've had to confirm.