Guide
EST to CET to Turkey time (TRT): offsets and DST rules
Three zones, two daylight saving rules and one zone with none. The gaps between them change more often than most calendars expect.
By Buğra SözeriPublished
If you work between the US East Coast, continental Europe and Turkey, the time difference is not one fixed number. The US and the EU both use daylight saving time but switch on different Sundays, and Turkey does not switch at all. This page gives the offsets, the rules that move them, and a ready table of common meeting hours.
The offsets
| Zone | Winter | Summer |
|---|---|---|
| New York (EST / EDT) | UTC−5 | UTC−4 |
| Paris, Berlin, Rome (CET / CEST) | UTC+1 | UTC+2 |
| Istanbul (TRT) | UTC+3 | UTC+3 |
These offsets come from the IANA time zone database, the same data your phone and browser use. Note that “EST” strictly means the winter offset only; in summer New York is on EDT. Many people say EST all year, which is where a lot of off-by-one-hour invites come from.
The rules that move the gap
- US: clocks go forward at 02:00 local time on the second Sunday of March and back at 02:00 on the first Sunday of November.
- EU: clocks go forward on the last Sunday of March and back on the last Sunday of October, at 01:00 UTC everywhere at once.
- Turkey: no change. It stayed on UTC+3 after 2016 and has kept it all year since.
Because the US starts earlier and ends later, there are two short windows each year when New York is on summer time but Europe is not. In those weeks the New York to Paris gap drops from 6 to 5 hours. Here are the dates those rules give for this year and next:
| Year | US starts | EU starts | EU ends | US ends |
|---|---|---|---|---|
| 2026 | Sun, Mar 8, 2026 | Sun, Mar 29, 2026 | Sun, Oct 25, 2026 | Sun, Nov 1, 2026 |
| 2027 | Sun, Mar 14, 2027 | Sun, Mar 28, 2027 | Sun, Oct 31, 2027 | Sun, Nov 7, 2027 |
Between “US starts” and “EU starts”, and between “EU ends” and “US ends”, the New York to Paris gap is 5 hours. These dates follow the current laws; if either side changes its rules, the converter picks it up from the time zone database. For the background, see DST rules: how the US and EU differ.
Meeting hours across the three zones
| New York | Paris (winter) | Istanbul (winter) | Paris (summer) | Istanbul (summer) |
|---|---|---|---|---|
| 06:00 | 12:00 | 14:00 | 12:00 | 13:00 |
| 08:00 | 14:00 | 16:00 | 14:00 | 15:00 |
| 09:00 | 15:00 | 17:00 | 15:00 | 16:00 |
| 10:00 | 16:00 | 18:00 | 16:00 | 17:00 |
| 12:00 | 18:00 | 20:00 | 18:00 | 19:00 |
| 14:00 | 20:00 | 22:00 | 20:00 | 21:00 |
| 17:00 | 23:00 | 01:00 (+1 day) | 23:00 | 00:00 (+1 day) |
| 20:00 | 02:00 (+1 day) | 04:00 (+1 day) | 02:00 (+1 day) | 03:00 (+1 day) |
“Winter” means both the US and EU are on standard time, “summer” means both are on daylight time. In the short windows above, use the summer column for Istanbul and subtract one hour from the winter Paris column.
Worked example: a 09:00 New York call
In January, 09:00 in New York (UTC−5) is 14:00 UTC. Paris adds 1 hour: 15:00. Istanbul adds 3 hours: 17:00. In July New York is on UTC−4, so 09:00 is 13:00 UTC: Paris is 15:00 and Istanbul 16:00. The Paris time stays the same; the Istanbul time moves an hour earlier, because Turkey did not change its clocks.
Frequently asked questions
- How many hours ahead of New York is Central Europe?
- Usually 6 hours. For a few weeks in March and about a week around the end of October and start of November it is 5 hours, because the US and EU change their clocks on different Sundays.
- What is Turkey's time zone?
- Turkey uses TRT, UTC+3, all year. It has not used daylight saving time since 2016, so its offset never changes.
- What is the time difference between EST and Turkey?
- In winter Istanbul is 8 hours ahead of New York (EST). In US summer (EDT) the gap is 7 hours, since only New York moves its clocks.
- Is CET always one hour behind Turkey?
- No. In winter (CET, UTC+1) Istanbul is 2 hours ahead. In summer (CEST, UTC+2) it is 1 hour ahead.
Sources & references
Authoritative references cited by this piece. Verified by Buğra Sözeri on the dates shown and re-checked at every deploy.
- IANA Time Zone Database — Source of the offsets for America/New_York, Europe/Paris and Europe/Istanbul(as of )
- 15 U.S. Code § 260a — Advancement of time — US daylight saving time rule since 2007(as of )
- Directive 2000/84/EC on summer-time arrangements — EU summer time: last Sunday of March to last Sunday of October, 01:00 UTC(as of )
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Published October 18, 2026