Does it account for daylight saving time?

Yes. The converter uses the IANA time-zone database (via the browser's Intl API), which knows current DST rules for every zone.

Which markets does it track?

NYSE, NASDAQ, LSE, Euronext, DAX (Xetra), TSE, HKEX, SSE, SGX, and ASX — the ten exchanges by volume that most people care about.

Why is the offset for some zones non-whole-hour?

Some countries (India: +5:30, Newfoundland: −3:30, Nepal: +5:45) use offsets that aren't full hours. The IANA database handles this; the calculator displays the exact offset.

Time Zone Converter

Convert any moment between major cities — Los Angeles, New York, London, Paris, Tokyo, Shanghai, Sydney, Dubai and more — and see at a glance which of the world's ten biggest stock exchanges are open right now. Daylight saving is handled automatically.

How to convert times between cities

Pick the From and To cities.
Enter a time in the From zone (or leave 'live now' to use the current moment).
Read the converted time. Two large clocks show the equivalent moment in each city, with UTC offset and date.

Major stock exchanges and trading hours

NYSE / NASDAQ — New York · 09:30–16:00 ET
LSE — London · 08:00–16:30 GMT
Euronext — Paris · 09:00–17:30 CET
DAX (Xetra) — Frankfurt · 09:00–17:30 CET
TSE — Tokyo · 09:00–15:00 JST
HKEX — Hong Kong · 09:30–16:00 HKT
SSE — Shanghai · 09:30–15:00 CST
SGX — Singapore · 09:00–17:00 SGT
ASX — Sydney · 10:00–16:00 AET

The cards on the converter page update every second with an 'open / closed / pre-open' badge and a countdown to the next state change.

Daylight saving is where time-zone maths goes wrong

The most common scheduling mistake comes from assuming the gap between two cities is fixed. It isn't — it shifts whenever one of them starts or ends daylight saving, and they rarely switch on the same day. London and New York are usually 5 hours apart, but for a couple of weeks each spring and autumn — when one has changed its clocks and the other hasn't — the gap is only 4. The southern hemisphere runs the opposite way: Sydney springs forward in October, just as North America and Europe are falling back, so the Sydney–London gap swings by two hours over a few weeks.

This converter reads the IANA time-zone database through your browser's built-in Intl engine, so it always applies the correct rule for the exact date you pick. You never have to add or subtract an hour by hand.

Tips for scheduling across time zones

Always name the zone. “3pm ET” is unambiguous; “3pm” is a missed meeting waiting to happen.
Convert from a fixed reference zone each time for recurring calls, rather than assuming the gap never moves — daylight saving will eventually break that assumption.
Mind the date line. 9am Monday in New York is already 10pm Monday in Tokyo and 11pm in Sydney, so a “Monday” call can land on Tuesday for some attendees.
Remember the odd offsets. India is UTC+5:30, Nepal +5:45, and parts of Australia +9:30 — not every zone is a whole hour from the next.

Frequently asked questions

Does it handle daylight saving automatically?: Yes. It uses the IANA database via the browser's Intl API, which knows the current DST rules for every zone and applies them to the date you enter.
Why do some offsets include 30 or 45 minutes?: A handful of regions use non-whole-hour offsets — India (+5:30), Nepal (+5:45), and parts of Australia (+9:30, +10:30). The converter shows the exact offset for each.
Which markets does it track?: The ten largest exchanges by volume — NYSE, NASDAQ, LSE, Euronext, DAX (Xetra), TSE, HKEX, SSE, SGX and ASX — each with a live open/closed badge and a countdown to the next open or close.
How accurate are the clocks?: They tick from your device's system clock, so they're as accurate as your device — which on virtually all phones and computers is synced automatically.