I lost an hour yesterday - my phone thought it was daylight savings, so the time changed over and when I got up I thought it was 6am but it was 7am. So I changed it to the right time.
Overnight, it changed back! The same thing happened this morning - I thought it was 5am, it was actually 6am. Makes a big difference when you wanted to be at the gym at 6. Not a happy camper.