World Clock & Time Zone Converter

How to use World Clock & Time Zone Converter

1. Read the current time across the listed cities.
2. Find an hour that falls within working hours for everyone involved.
3. Send a calendar invitation rather than a written time, so it converts correctly for each person.
4. Daylight saving starts and ends on different dates by country, so the gap between two cities is not constant.
5. India is UTC+5:30 and Nepal UTC+5:45 — half and quarter-hour offsets are common in Asia.
6. Times update live from your device’s clock.

Offsets are not fixed, which is why fixed schedules drift

A recurring meeting set at a fixed UTC time drifts relative to everyone’s local clock as daylight saving starts and ends — and it does not change on the same date everywhere. The US switches in March and November, the EU in late March and late October, and the southern hemisphere in the opposite season. For a few weeks each year the usual gap between two cities is an hour different from normal, which is the period when recurring calls quietly land at the wrong time for half the participants.

The offsets that catch people out

India is UTC+5:30, a half-hour offset shared by Sri Lanka and used with variations by Iran, Afghanistan and parts of Australia. Nepal is UTC+5:45, a quarter-hour offset. China spans five geographic time zones and uses one, so sunrise in Xinjiang is around 10am by the clock. And the date line means a call between India and California crosses midnight in one direction — 9am in Bengaluru is 8:30pm the previous day in San Francisco.

Scheduling across many zones

The overlap between India and the US west coast is roughly two hours at either end of the working day, which is why Indian teams serving US clients commonly start late or finish late rather than finding a comfortable middle. When scheduling, name the time zone explicitly and prefer a calendar invitation over a stated time — the invitation converts for each recipient and survives daylight saving changes, which a written time does not. “3pm IST” in an email is a recurring source of missed meetings.