Choose a city, date and time in the left base panel and a destination in the right panel. Use current time fills the base city’s current local date and time. Both summaries update automatically. Swap uses the converted time as the new source time.
January 15, 2026 at 09:00 in Seoul is January 14 at 19:00 in New York. Always check the calendar day difference.
Nonexistent local times show a notice. Repeated local times require you to choose the first or second occurrence before a result appears.
Input is local to your selected source city. Conversion uses that IANA time zone independently of the browser’s own zone.
Minute precision, years 2000–2099. Older browser IANA data may miss recent rule changes. Check official local guidance for important schedules.