Clocks going back, flight at 7am Sunday!

[moveblues]

I'm being extremely dense, and asking you what time I need to set my alarm!
Need to get up at 3am on Sunday to travel for flight. Phones -should- auto update but I'm extremely paranoid they won't!
Should I just put my analogue clock back an hour and set the alarm for 3?
Idk why my brain is like this!
Thank you for your help

Yes, I'd set analog back 1 hour. Your phone will update itself though. Don't worry.
Worse case scenario, you don't sleep for 1 night