How to Plan Meetings Across Time Zones

Enter a date, time and source IANA zone, convert it to multiple cities, label previous/same/next day and apply daylight-saving rules.

What to know before you start

Abbreviations such as CST or IST can be ambiguous. Future and historical conversions depend on time-zone databases and government rule changes.

Recommended workflow

Collect each participant’s city/IANA time zone rather than an ambiguous abbreviation.
Compare the actual meeting date because daylight-saving differences can change by season.
Check local working hours and label the date for every attendee, especially when the meeting crosses midnight.

How to check the result

Recheck the result against the original input and the rule you intended to apply. Abbreviations such as CST or IST can be ambiguous. Future and historical conversions depend on time-zone databases and government rule changes.

Common mistakes

Common failures come from wrong units, ambiguous assumptions, changing the rule after seeing a result, or using a quick browser workflow where a regulated or specialist process is required.

Frequently asked questions

Why should I use an IANA time zone instead of GMT+X?

A city zone such as America/New_York applies daylight-saving and historical rules automatically, while a fixed offset does not.

Why is the converted date different?

Crossing enough time zones can move the local result to the previous or next calendar day.

Time Zone Converter