Pick a call time that works across time zones

The job

Scheduling across zones fails on mental math — especially when daylight saving shifts one side but not the other. Look at the actual clock in each place before sending the invite.

How to do it

Tick the cities involved — they stay saved for next visit. The top section shows every zone's live time; below, enter the candidate date, time, and which zone it is in, and the tool shows that instant everywhere at once.

• The GMT offset next to each city reflects the rules in force on that date — DST moves are already accounted for.
• Your own device zone is included as "This device", so the list answers both sides.

Worked example

Proposing 10:00 in Tokyo on a winter Monday lands 01:00 in London (same day) and 20:00 in New York the evening before — workable for London, awkward for New York; sliding to 22:00 Tokyo puts New York at 08:00.

Limits

The list is a curated set of common zones, not every city — pick the listed city that shares your offset. Once a time is chosen, the ICS generator can produce a calendar file with the zone carried correctly.