Daylight Saving Time! It's nice that several of my clocks automatically adjusted for DST but still a big PITA to have to deal with the stupider devices. I didn't really need a clock on my microwave or coffeemaker. I guess it's nice to get the extra hour of daylight in the evening but crazy that we have to change it twice a year!
I'm grateful that I live in Arizona where we don't have to do that silly back and forth.