The time difference between your destination and the UK or the US usually changes twice a year: the UK changes its clocks on the last Sunday of March and October, the US on the second Sunday of March and the first Sunday of November, while many countries do not change their clocks at all, or do so on other dates. The table below gives the gap with London and with New York for each country in our guides, in winter and in summer, calculated from the international time zone database (IANA).
Live local time
Calculated by your browser from the IANA time zone database.
Time difference: the essentials
- London: UTC+0 in winter (GMT), UTC+1 in summer (BST).
- New York (US Eastern): UTC−5 in winter (EST), UTC−4 in summer (EDT).
- Clock changes: UK on Sunday 25 October 2026 and Sunday 28 March 2027; US on Sunday 1 November 2026 and Sunday 14 March 2027 (full list below).
- A “+” means the destination is ahead of London (or New York), a “−” that it is behind.
- Southern hemisphere: countries that change their clocks (Chile, New Zealand, south-eastern Australia) do so in the opposite season to the UK and the US, so the gap varies a lot with the season.
- Overseas territories: Guadeloupe, Martinique, French Guiana, Réunion, French Polynesia and New Caledonia do not change their clocks.
Time difference with London and New York, country by country
| Country | Winter vs London (GMT) | Summer vs London (BST) | Winter vs New York (EST) | Summer vs New York (EDT) | When it is noon in London in winter, it is… | When it is noon in New York in winter, it is… |
|---|---|---|---|---|---|---|
| South Africa | +2 h | +1 h | +7 h | +6 h | 14:00 | 19:00 |
| Germany | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| Argentina | −3 h | −4 h | +2 h | +1 h | 09:00 | 14:00 |
| Australia | +8 h to +11 h | +7 h to +9 h | +13 h to +16 h | +12 h to +14 h | 23:00 | 04:00 (next day) |
| Brazil | −2 h to −5 h | −3 h to −6 h | +3 h to 0 h | +2 h to −1 h | 09:00 | 14:00 |
| Benin | +1 h | 0 h | +6 h | +5 h | 13:00 | 18:00 |
| Cambodia | +7 h | +6 h | +12 h | +11 h | 19:00 | 00:00 (next day) |
| Canada | −3 h 30 to −7 h | −3 h 30 to −8 h | +1 h 30 to −2 h | +1 h 30 to −3 h | 07:00 | 12:00 |
| Cape Verde | −1 h | −2 h | +4 h | +3 h | 11:00 | 16:00 |
| Chile | −3 h to −5 h | −4 h to −7 h | +2 h to 0 h | +1 h to −2 h | 09:00 | 14:00 |
| China | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Colombia | −5 h | −6 h | 0 h | −1 h | 07:00 | 12:00 |
| South Korea | +9 h | +8 h | +14 h | +13 h | 21:00 | 02:00 (next day) |
| Costa Rica | −6 h | −7 h | −1 h | −2 h | 06:00 | 11:00 |
| Cuba | −5 h | −5 h | 0 h | 0 h | 07:00 | 12:00 |
| Egypt | +2 h | +2 h | +7 h | +7 h | 14:00 | 19:00 |
| United Arab Emirates | +4 h | +3 h | +9 h | +8 h | 16:00 | 21:00 |
| Spain | +1 h to 0 h | +1 h to 0 h | +6 h to +5 h | +6 h to +5 h | 13:00 | 18:00 |
| United States | −5 h to −10 h | −5 h to −11 h | 0 h to −5 h | 0 h to −6 h | 07:00 | 12:00 |
| Greece | +2 h | +2 h | +7 h | +7 h | 14:00 | 19:00 |
| Guadeloupe | −4 h | −5 h | +1 h | 0 h | 08:00 | 13:00 |
| French Guiana | −3 h | −4 h | +2 h | +1 h | 09:00 | 14:00 |
| Hong Kong | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Mauritius | +4 h | +3 h | +9 h | +8 h | 16:00 | 21:00 |
| India | +5 h 30 | +4 h 30 | +10 h 30 | +9 h 30 | 17:30 | 22:30 |
| Indonesia | +7 h to +9 h | +6 h to +8 h | +12 h to +14 h | +11 h to +13 h | 19:00 | 00:00 (next day) |
| Ireland | 0 h | 0 h | +5 h | +5 h | 12:00 | 17:00 |
| Italy | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| Japan | +9 h | +8 h | +14 h | +13 h | 21:00 | 02:00 (next day) |
| Kenya | +3 h | +2 h | +8 h | +7 h | 15:00 | 20:00 |
| Réunion | +4 h | +3 h | +9 h | +8 h | 16:00 | 21:00 |
| Madagascar | +3 h | +2 h | +8 h | +7 h | 15:00 | 20:00 |
| Malaysia | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Maldives | +5 h | +4 h | +10 h | +9 h | 17:00 | 22:00 |
| Malta | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| Morocco | +1 h | 0 h | +6 h | +5 h | 13:00 | 18:00 |
| Martinique | −4 h | −5 h | +1 h | 0 h | 08:00 | 13:00 |
| Mexico | −5 h to −8 h | −6 h to −8 h | 0 h to −3 h | −1 h to −3 h | 06:00 | 11:00 |
| New Caledonia | +11 h | +10 h | +16 h | +15 h | 23:00 | 04:00 (next day) |
| New Zealand | +13 h to +13 h 45 | +11 h to +11 h 45 | +18 h to +18 h 45 | +16 h to +16 h 45 | 01:00 (next day) | 06:00 (next day) |
| Philippines | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Poland | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| French Polynesia | −9 h to −10 h | −10 h to −11 h | −4 h to −5 h | −5 h to −6 h | 02:00 | 07:00 |
| Portugal | 0 h to −1 h | 0 h to −1 h | +5 h to +4 h | +5 h to +4 h | 12:00 | 17:00 |
| Peru | −5 h | −6 h | 0 h | −1 h | 07:00 | 12:00 |
| Qatar | +3 h | +2 h | +8 h | +7 h | 15:00 | 20:00 |
| Romania | +2 h | +2 h | +7 h | +7 h | 14:00 | 19:00 |
| United Kingdom | 0 h | 0 h | +5 h | +5 h | 12:00 | 17:00 |
| Dominican Republic | −4 h | −5 h | +1 h | 0 h | 08:00 | 13:00 |
| Saint Barthélemy | −4 h | −5 h | +1 h | 0 h | 08:00 | 13:00 |
| Singapore | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Sri Lanka | +5 h 30 | +4 h 30 | +10 h 30 | +9 h 30 | 17:30 | 22:30 |
| Switzerland | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| Sweden | +1 h | +1 h | +6 h | +6 h | 13:00 | 18:00 |
| Senegal | 0 h | −1 h | +5 h | +4 h | 12:00 | 17:00 |
| Taiwan | +8 h | +7 h | +13 h | +12 h | 20:00 | 01:00 (next day) |
| Thailand | +7 h | +6 h | +12 h | +11 h | 19:00 | 00:00 (next day) |
| Tunisia | +1 h | 0 h | +6 h | +5 h | 13:00 | 18:00 |
| Turkey | +3 h | +2 h | +8 h | +7 h | 15:00 | 20:00 |
| Vietnam | +7 h | +6 h | +12 h | +11 h | 19:00 | 00:00 (next day) |
How to read the time difference
The gap shown is the difference between local time and London time (or New York time). With +7 h, it is 19:00 at the destination when it is noon in London. With −6 h, it is 06:00. For countries with several time zones (United States, Canada, Australia, Brazil, Mexico, Indonesia…), each page details the gap by region and major city. Beyond the gap shown, flying west and flying east do not feel the same: our jet lag guide explains how to prepare.
The gap changes through the year for two reasons: the clock change in your home country, and that of the destination when it has one. The US and Canada, for example, change their clocks two weeks before the UK in spring and one week after it in autumn: during those few weeks the usual gap between London and New York shrinks from 5 hours to 4. Our country pages flag these transition periods.
Clock changes in the UK and the US, 2026 and 2027
- UK, Sunday 25 October 2026: BST (UTC+1) to GMT (UTC+0)
- US, Sunday 1 November 2026: EDT (UTC−4) to EST (UTC−5) in New York
- US, Sunday 14 March 2027: EST (UTC−5) to EDT (UTC−4)
- UK, Sunday 28 March 2027: GMT (UTC+0) to BST (UTC+1)
- UK, Sunday 31 October 2027: BST (UTC+1) to GMT (UTC+0)
- US, Sunday 7 November 2027: EDT (UTC−4) to EST (UTC−5)
The Caribbean territories (Guadeloupe, Martinique), French Guiana, Réunion and the Pacific territories do not change their clocks: the gap with London and New York therefore varies by one hour between winter and summer. The Pacific territories are among the main destinations in Oceania, which our overview page presents with their seasons and entry requirements.
Managing jet lag when you travel
Beyond three or four hours of difference, your sleep and meal rhythm is disrupted on arrival. The simplest practical tips: set your watch to local time as soon as you board, fix meals and bedtime to the local schedule from the first day, plan a light first day and spend time in daylight. If you take medication at fixed times, ask your doctor for advice before you leave.
Preparing your trip
Each time difference page links to our country guide and, where it exists, to the “when to go” page with the month-by-month climate. For your budget on the ground, see also our currency converter.
Time difference FAQ
When do the clocks change in the UK and the US?
The UK goes back to GMT on the last Sunday of October (25 October 2026, then 31 October 2027) and forward to BST on the last Sunday of March (28 March 2027). The US goes back to standard time on the first Sunday of November (1 November 2026, then 7 November 2027) and forward to daylight time on the second Sunday of March (14 March 2027).
Which country has the biggest time difference with London or New York?
Among the destinations in our guides, New Zealand has the biggest gap: +13 h from London and +18 h from New York in northern winter at Auckland, and up to +13 h 45 and +18 h 45 on the Chatham Islands. French Polynesia is at the other end, with Tahiti 10 h behind London and 5 h behind New York in winter, and 11 h and 6 h behind in summer.
Why does the time difference change between winter and summer?
Because the UK and the US move their clocks forward an hour in summer, while most tropical countries and part of Asia do not change theirs. In the southern hemisphere, countries that change their clocks do so in the opposite seasons, so the gap can vary by two hours.
Do France’s overseas territories have a time difference with London and New York?
Yes. Compared with London (winter or summer): Guadeloupe and Martinique −4 h or −5 h, French Guiana −3 h or −4 h, Réunion +4 h or +3 h, Tahiti −10 h or −11 h, New Caledonia +11 h or +10 h. Compared with New York (winter or summer): Guadeloupe and Martinique +1 h or 0 h, French Guiana +2 h or +1 h, Réunion +9 h or +8 h, Tahiti −5 h or −6 h, New Caledonia +16 h or +15 h.
Where does the data on these pages come from?
From the international time zone database (IANA Time Zone Database), used by most computer systems. Future clock-change dates may be changed by local authorities.
Our sources
- IANA Time Zone Database (tz database), version 2026b, consulted on 13 October 2026: time zones and clock-change dates for each country, the UK and the US. Future dates may be changed by local authorities.
- UK clock changes: GOV.UK, When do the clocks change?
- US daylight saving time: NIST, Daylight Saving Time.
- Gaps with London and New York: Destination de Voyage calculation from the IANA data.
Updated October 2026.