Last week, I was so worried that my mentees all over the world would miss my meetings because of the time change. One of them in England actually did. So I sent an email to everyone to tell them to check their invitations carefully and note the new time, and if it is a problem, we can work something out.
Then today, I got fooled by the time change. I had a group meeting set up by a fellow in Germany. It is on Monday and Wednesday mornings at 11 am every other week. So, I set my alarm for 10:30 am and went to bed at 4 am. When I woke up and got on my computer for the meeting, I found out it was scheduled for noon. I could have slept for another hour.