Stop Doing Math Before Meetings: The Ultimate Guide to Managing Global Time Zones
Mental gymnastics to figure out what time it is in Tokyo? You're doing it wrong. Here's why your team needs a visual time zone board, not a calculator. -
Best overlap: 8:00 AM to 10:00 AM in Buenos Aires is 4:30 PM to 6:30 PM in Kolkata.
8:00 AM to 10:00 AM in Buenos Aires is when Kolkata is also working, at 4:30 PM to 6:30 PM their time. The window is short at 2 hours, so keep meetings tight and anchored to 8:00 AM in Buenos Aires (4:30 PM in Kolkata).
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Buenos Aires America/Argentina/Buenos Aires | ||||||||||||||||||||||||
Kolkata Asia/Kolkata |
Mental gymnastics to figure out what time it is in Tokyo? You're doing it wrong. Here's why your team needs a visual time zone board, not a calculator. -
A complete guide to time zones in 2025, from UTC and GMT differences to Daylight Saving Time changes, IANA database rules, abbreviation pitfalls, and developer best practices for handling global time. -