01
Pick a reference date unlike a world clock
World clocks show now. Travel planning often needs a future departure date or meeting date, so this tool compares zones for the date you choose.
Travel time difference calculator
Compare two travel time zones for a chosen reference date, not only the current time.
Time zone inputs
Time difference —
Origin time —
Destination time —
How to compare travel time zones
02
IANA time zones account for DST
Places such as New York and London change UTC offset during daylight saving time. The calculator uses browser Intl time-zone data for the selected date.
03
Check the date line effect
Large offsets can move the destination to the next or previous date. Checking the local date prevents flight and lodging mistakes.
04
Share both local times
Send both dates and local times for meetings.
05
Rules can change
Government policy and browser time-zone data can change.
Frequently asked questions
Does it account for daylight saving time?
Yes for supported IANA time zones, using the browser’s date-specific time-zone data.
Can I enter a manual UTC offset?
This batch uses major time-zone choices. Manual UTC offset input can be added as a later expansion.
How is this different from a world clock?
A world clock focuses on the current time. This tool compares two zones for the date and time you enter.
What if my city is missing?
Choose a nearby city with the same IANA time zone.