Best overlap: 8:00 AM to 10:00 AM in Santiago is 4:30 PM to 6:30 PM in Kolkata.
Plan around 8:00 AM to 10:00 AM in Santiago, which is 4:30 PM to 6:30 PM in Kolkata, to catch everyone during office hours. Kolkata is 8.5 hours ahead of Santiago. That's only 2 hours of overlap, so pair live calls with async follow-ups to make the most of it. For part of the year the maths changes: Santiago observes daylight saving, Kolkata does not, shifting the overlap by an hour.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Santiago America/Santiago | ||||||||||||||||||||||||
Kolkata Asia/Kolkata |
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. -