My digital cameras all need to be reset.
Three. Microwave, range, car.
Can you stop the clock? I have a chiming one that won’t back up but I just stop it for an hour.
What I have to be alert about is that my smartphone be properly set for time zone so it’s on mine which does NOT use DST. Sometimes an update or hard reboot while travelling will put me in EDT.
Personally, I changed an alarm clock, 2 microwaves, an oven, and a wall clock. Someone else has changed or will change their alarm clock and wall clock in the same house.
I leave the clock in my car on DST, since I only really look at the minutes anyway.
The thermostat automatically changes. Back when the US decided they had to be different and change when DST started and ended, it was annoying for those 4 weeks (total) that our thermostat would be off an hour. If we manually changed it, we’d just have to change it back pretty soon after, so it was pointless. Eventually the thermostat died and the new one came programmed with the new DST cycle.
23 …
Your microwave probably has a clock, but you’ve never noticed it. I leave mine set to the timer so I never use or even see the clock. See how the picture I’ve linked to enables you to toggle between timer & clock?
11 total for me counting the car and ignoring the 3 I let just flash 12-12-12-12 year round.
We just replaced all the smoke alarms this summer (they were close to 20 years old), and figured the batteries would be ok until spring.
Have you ever seen a microwave that displays a : when not in use? If you have, you’ve seen a microwave with a clock that hasn’t been set. We don’t usually set the time on ours because tiny power fluctuations wipe the time out at least twice a month.
I have 2 clocks in my bedroom I’ve corrected the time on, and a bathroom clock I still need to get to, and the clock in my car I still need to reset.
Same here. I sometimes don’t set the range or microwave because as someone else mentioned, even the tiniest power fluctuations wipe them out.
One car (the other is automatic), one microwave, one oven, and my five year old son’s “okay to wake” alarm clock. Forgetting that last one is not fun 
I’ve often not bothered to set the clock in the microwave. One less clock to change. I did do it this time, though, since we lost our stove clock.
As for the op: 6: alarm clocks, the microwave, and wall clocks.
Though my free cell phone hasn’t changed but seems to provide no way to set the time. I thought calling it would fix it (like landline Caller ID), but it didn’t.
Three. Two LED digitals and a watch that I might not wear until the clocks change back again.
Thermostat
Wall clock
Microwave
Stove
Coffee Maker
Alarm Clocks (2)
Car clocks (2)
So 9 clocks total that I have to reset.
Five:
-Stove/oven
-Office wall clock
-BMW
-Jeep
-Watch
Mom’s kitchen clock, my big clock and my car’s.
The fitbit was cranky about it but eventually decided to synch up. Everything else changed by itself.
Nine:
[ul]
[li]Alarm clock[/li][li]Bathroom clock[/li][li]Home office clock[/li][li]Small radio that I keep on the treadmill[/li][li]Coffee table clock[/li][li]Universal remote[/li][li]Microwave[/li][li]Stove[/li][li]Car[/li][/ul]
My phone, TiVo, AppleTV, and watch update themselves. I don’t use the programmable feature on my thermostat, so I never change that.
Microwave
Oven
3 wall clocks
Car
Truck
I’m sure I’m forgetting something.
Three (wristwatch, range, microwave), plus one inside my car.
This year, I finally remembered not to change my alarm clock, only to have to change it again when it automatically changed the time like it’s supposed to.
Side note: I also changed the batteries in three smoke/CO detectors, although I also have two of the new “10-year battery” ones where you can’t change them; I assume the sensor will wear out long before the battery does.