Airports account for DST when displaying flight schedules. So, the departure and arrival times you see on your ticket or at the airport will reflect the local time with DST applied.
When Daylight Saving Time (DST) starts, clocks spring forward one hour, effectively losing the 2:00 am hour.
Apple devices are designed to automatically adjust the time for DST. So, any alarms set between 2:00 am and 2:59 am will automatically be shifted forward by one hour to the new 3:00 am time.
While you mentioned you understand DST, here are some tips to avoid missing alarms in the future:
- Airlines typically account for DST during flight scheduling. So, the flight information you received (boarding pass, itinerary, etc.) would have reflected the departure time with DST applied.
- The information you provided didn't explicitly mention the flight time or booking process.
- It's likely the flight was scheduled for sometime after 3:00 am, considering you missed your 2:00 am alarm due to DST.
- Before going to bed on nights with a DST change, double-check your alarms to ensure they reflect the intended wake-up time in the new time zone.