Time zone
converter
Your time is detected automatically; pick a city and see their time right now, the exact difference, and what any given hour of yours becomes over there — daylight saving handled for you.
Cities, not countries
Time zones don't follow borders neatly — the United States spans six, Russia eleven, and Australia mixes whole-hour and half-hour zones in one country. That's why this converter selects by city: "New York" is unambiguous where "USA time" is meaningless. Each city maps to an official IANA zone, the same database operating systems use.
Why the answer changes through the year
Daylight saving is the trap in timezone math. London and New York are 5 hours apart most of the year — but for a few weeks each spring and autumn, when one has switched and the other hasn't, the gap is 4. Southern-hemisphere cities shift in the opposite season entirely. This page never uses a stored offset table; it asks your browser's live IANA timezone data for the moment you're looking at, so DST is always already applied.
Nepal runs on +5:45 — one of the only :45 zones on Earth
Planning calls across zones
The two anchors above do the practical work: what your chosen hour becomes over there, and when their 9:00 AM lands for you. For big gaps (US–Asia is typically 12–16 hours), one side's morning is the other's evening, and the "+1 day" tag matters — Monday 9 PM in New York is already Tuesday in Tokyo. For counting the days themselves rather than the hours, the date difference calculator and time & hours calculator are next door.
Time zones FAQ
Each city has a UTC offset; the difference between offsets is the time difference. This tool reads both from the live IANA timezone database in your browser, so daylight saving is already included.
Because zones track the sun, not borders — big east-west countries span many. The continental US uses four (six with Alaska and Hawaii), Russia eleven, Australia three plus half-hour offsets. That's why picking a city beats picking a country.
Some regions adopted half-hour offsets to center clocks on their geography: India (+5:30), Iran (+3:30) and parts of Australia (+9:30). Nepal goes further at +5:45 — one of the only quarter-hour zones in the world.
Daylight saving. Both cities shift clocks, but on different dates — so the usual 5-hour gap becomes 4 for a few weeks each March and late October. This converter always shows the live, DST-correct difference.