Daylight Saving Time and Global Timezone Info
Daylight Saving Time (DST) is a system of setting clocks forward by one hour during warmer months to extend evening daylight. Time differences vary depending on whether DST is active.
1. Major DST Periods (2026)
US / Canada
- Starts: 2nd Sunday of March (2:00 AM)
- Ends: 1st Sunday of November (2:00 AM)
Europe / UK
- Starts: Last Sunday of March (1:00 AM UTC)
- Ends: Last Sunday of October (1:00 AM UTC)
2. Time Differences by Major City (vs. Korea/KST)
New York (Eastern Time)
- Winter (Standard): 14 hours behind KST
- Summer (DST): 13 hours behind KST
Los Angeles (Pacific Time)
- Winter (Standard): 17 hours behind KST
- Summer (DST): 16 hours behind KST
London (GMT/BST)
- Winter (Standard): 9 hours behind KST
- Summer (DST): 8 hours behind KST
3. Tips for Meeting Coordination
- Use UTC Standards: To avoid confusion with DST, communicate using Coordinated Universal Time (UTC) as a baseline.
- Arizona Note: Most of the state of Arizona in the US does not observe DST.
- Check Flight Times: If traveling on the day of a DST transition, double-check local departure and arrival times as they may shift.