Current local time in CastlereaghNorthern Ireland, United Kingdom
––:––
Europe/LondonUTC+0 / UTC+1
Castlereagh keeps Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. Its IANA time zone is Europe/London.
Daylight saving time in Castlereagh
Castlereagh changes its clocks twice a year. The next changes, from the IANA time zone database as of October 2026:
- Sun, Oct 25, 2026: clocks go back 1 hour to UTC+0
- Sun, Mar 28, 2027: clocks go forward 1 hour to UTC+1
Cities on the same time as Castlereagh
These places show the same clock as Castlereagh every day of the coming year, clock changes included.
- In United Kingdom
London, Birmingham, Glasgow, Manchester, Sheffield, Leeds, Edinburgh, Liverpool
- In other countries
Dublin (Ireland), Lisbon (Portugal), Las Palmas de Gran Canaria (Spain), Saint Helier (Jersey), Douglas (Isle of Man), Saint Peter Port (Guernsey), Tórshavn (Faroe Islands)
Castlereagh time zone at a glance
- IANA time zone
- Europe/London
- UTC offset
- UTC+0 / UTC+1
- Daylight saving
- Observed
- Next clock change
- Sun, Oct 25, 2026 → UTC+0
- Country
- United Kingdom
- Region
- Northern Ireland
- Coordinates
- 54.57°, -5.88°
- Population
- 56,679
- Local date
- —
Sunrise and sunset in Castlereagh today
Computed from Castlereagh's latitude and longitude for the current local date. Times shift by a minute or two either side depending on elevation and the horizon you actually see.
- Sunrise
- —
- Sunset
- —
- Solar noon
- —
- Day length
- —
- Civil dawn
- —
- Civil dusk
- —
- Golden hour ends
- —
- Golden hour begins
- —
Castlereagh time difference from major cities
| City | Local time now | Castlereagh is |
|---|---|---|
| New York CityUnited States | — | 5h ahead |
| DubaiUnited Arab Emirates | — | 3h behind |
| SingaporeSingapore | — | 7h behind |
| TokyoJapan | — | 8h behind |
| SydneyAustralia | — | 10h behind |
Need a different pair? Compare any two cities or convert a specific time.
Castlereagh time: questions and answers
- What time is it in Castlereagh right now?
- The clock at the top of this page shows the live local time in Castlereagh, updated every second from your device's clock. Castlereagh keeps Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer.
- What time zone is Castlereagh in?
- Castlereagh is in the IANA time zone Europe/London: Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer.
- Does Castlereagh observe daylight saving time?
- Yes. Upcoming changes: Sun, Oct 25, 2026: clocks go back 1 hour to UTC+0; Sun, Mar 28, 2027: clocks go forward 1 hour to UTC+1.
- Which cities share Castlereagh's time?
- London, Birmingham, Glasgow, Manchester, Sheffield, Leeds keep the same clock as Castlereagh all year.
Planning something with Castlereagh?
- Find a meeting time — the hours that overlap between Castlereagh and your team.
- Convert a time — turn a time in Castlereagh into yours, or the other way round.
- Compare office hours — when Castlereagh offices and yours are both open.
- Send a calendar invite — with the Europe/London time zone set correctly.
Other cities in United Kingdom
Belfast, Glasgow, Edinburgh, Birkenhead, Liverpool, Preston, Swansea, Manchester, Cardiff, Bradford