How it works
The timezone converter compares two cities using each one's live IANA-database offset — so daylight saving, half-hour zones like India Standard Time, and 45-minute zones like Nepal are all handled correctly. The 24-hour strip shows the next day at a glance. Green blocks are comfortable working hours in both cities; amber blocks are waking hours; dark blocks are night. The 'Best meeting window' box picks the widest 9am–6pm overlap, then relaxes if none exists. All calculation happens in your browser. Nothing is stored.
How to use
- 01The 'from' city defaults to your location.
- 02Tap the second card to pick a 'to' city — search by name, IATA code or zone.
- 03Read the current time in both cards.
- 04Scan the 24-hour strip for green (comfortable) overlap windows.
- 05The 'Best meeting window' card gives you a ready-to-copy pitch.
Frequently asked
Are daylight saving changes handled?open
Yes. The converter uses your browser's Intl API which always reflects current DST rules for each IANA timezone — including when clocks jump forward or back.
How is the best meeting window found?open
It looks for hours between 9am and 6pm that overlap in both cities. If none exist, it relaxes to 8am–9pm, and finally to 7am–11pm. Anything outside that is called 'no comfortable overlap'.
Why does it default to my city on 'from'?open
Your browser reports its IANA timezone. If it matches one of our 40 curated cities, we set that as the 'from' automatically so you're always the reference.
Can I see a specific pair like Delhi to New York?open
Yes — visit /timezone/kolkata-to-new-york or use the picker here. We've curated 30 popular pairs with their own pages.