Castlereagh in numbers
- Coordinates
- 54.5735, -5.8847
- Population
- 56 679
- Region
- Northern Ireland
- Country
- United Kingdom, Europe
- Capital
- London — 514 km away
- Same name
- 2 more places in the world share this name
What time is it in Castlereagh, Northern Ireland, United Kingdom
On this page the local time of Castlereagh, Northern Ireland, United Kingdom is updated live, in the Europe/London zone (+1).
Castlereagh, United Kingdom
Friday, 16 October 2026
UTC+1 · Europe/London
Local time in Castlereagh
UTC+1 · daylight saving time is active
Local time in Castlereagh, Northern Ireland.
The sun today
Sunrise 7:55 AM Solar noon 1:10 PM Sunset 6:26 PM Daylight 10 h 31 min Night 13 h 29 min Civil twilight 7:18 AM – 7:02 PM
Weather in Castlereagh right now
Loading the current weather…
Weather data by Open-Meteo, updated every 30 minutes.
Castlereagh and its neighbours
Postal codes
- BT5
- BT6
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
Largest cities in Northern Ireland
- Belfast 348 005
- Londonderry County Borough 87 153
- Derry 83 652
- Lisburn 77 506
- Newtownabbey 63 860
- Bangor 61 011
Other places named Castlereagh
- Castlereagh New South Wales, Australia
- Castlereagh Nova Scotia, Canada
Same time zone — Europe/London
- London United Kingdom
- Birmingham United Kingdom
- Glasgow United Kingdom
Nearby places
- Ormeau — 1.1 km
- Rosetta — 1.2 km
- Ballynafeigh — 1.2 km
- Stranmillis — 2.2 km
- Belfast — 2.3 km
- Knock — 2.5 km
Castlereagh: clock, sun and surroundings
Set your clock for Castlereagh and it will also be right in Ormeau and Rosetta.
Castlereagh appears under 2 postal codes.
Castlereagh sits under Europe/London, which puts local clocks at UTC+1. Daylight saving in use: Yes.
Today's times for Castlereagh: the sun is up at 7:55 AM and down at 6:26 PM. That means 10 h 31 min of daylight.
Questions and answers
- How is Castlereagh's time zone listed?
- Castlereagh's time zone is listed as Europe/London, with an offset of +1.
- Should I expect a daylight saving change in Castlereagh?
- Yes.
- What time does the day start in Castlereagh?
- The sun rises at 7:55 AM.