Best overlap: 10:30 AM to 6:30 PM in Kolkata is 8:00 AM to 4:00 PM in Cairo.
Target 10:30 AM to 6:30 PM in Kolkata, which lands at 8:00 AM to 4:00 PM for the Cairo side. Cairo is 2.5 hours behind Kolkata, but you'd hardly notice — 8 hours of shared hours makes this feel like working in neighbouring time zones. Note that Cairo follows daylight saving while Kolkata stays put, so the times above drift by an hour seasonally.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Kolkata Asia/Kolkata | ||||||||||||||||||||||||
Cairo Africa/Cairo |
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. -