What time the markets really open in your zone
The New York open is at 2:30pm UK time — except for about four weeks a year when it is at 1:30pm and everyone is briefly wrong.
The regular sessions
| Exchange | Local hours | Observes DST? |
|---|---|---|
| NYSE / Nasdaq | 9:30am–4:00pm ET | Yes |
| London Stock Exchange | 8:00am–4:30pm UK | Yes |
| Deutsche Börse | 9:00am–5:30pm CET | Yes |
| Tokyo | 9:00am–3:00pm JST | No |
| Hong Kong | 9:30am–4:00pm HKT | No |
| Sydney | 10:00am–4:00pm AEST | Yes |
The overlap that matters
London and New York share roughly 2:30pm to 4:30pm UK time. For globally traded instruments, that two-hour window regularly carries a disproportionate share of the day's volume, because both books are open and both sets of participants are at their desks.
The weeks when the open moves
The US shifts to daylight saving on the second Sunday in March; the EU and UK shift on the last Sunday in March. For those three weeks the New York open lands at 1:30pm UK time rather than 2:30pm. In autumn the mismatch runs the other way for about a week.
Anyone who has memorised "the US opens at half past two" is therefore wrong for around four weeks a year — and those are precisely the weeks when an alert set to the wrong hour costs money.
What to do about it
- Anchor alerts to the exchange's own zone, not to a fixed local time.
- Diary the two transition weekends and re-check any hard-coded schedule.
- For Asian markets, remember the relationship only moves when your own clock changes.
The transatlantic calendar, in detail
The US moves to daylight saving on the second Sunday in March; the EU and UK on the last Sunday. That leaves roughly three weeks each spring when the New York open lands an hour earlier in European terms. In autumn the EU falls back a week before the US, producing a shorter mismatch in the other direction.
| Period | NYSE open, London time | NYSE open, Frankfurt time |
|---|---|---|
| January | 14:30 | 15:30 |
| Mid-March window | 13:30 | 14:30 |
| April to October | 14:30 | 15:30 |
| Late October window | 15:30 | 16:30 |
Why the overlap window matters
Between roughly 14:30 and 16:30 London time both the European and American books are open. Liquidity in globally traded instruments concentrates there, spreads narrow, and large orders are easier to fill. That is also when scheduled US data releases land, which is why European desks structure their afternoon around it.
Practical setup
- Anchor alerts to the exchange's zone, not to a fixed local time.
- Put the two transition weekends in your calendar as recurring reminders.
- Remember Asian markets never move, so only your own clock change affects them.
- Check settlement cut-offs separately — they follow the exchange's local date, not yours.
Filed under Markets · Tags: trading hours, nyse, lse, daylight saving. Figures verified against the official definitions — see our editorial policy.