Castlereagh to Tokyo time converter

Tokyo is 8 hours ahead of Castlereagh. When it is 9:00 AM in Castlereagh, it is 5:00 PM in Tokyo.

Castlereagh BST

Monday, October 19, 2026

Tokyo JST

Monday, October 19, 2026

Castlereagh
United Kingdom
Mon, Oct 19
BSTUTC+1
Tokyo
Japan
Mon, Oct 19
JSTUTC+9+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Castlereagh to Tokyo conversion table

Every hour of today in Castlereagh and the matching time in Tokyo. Light rows are typical working hours (9:00–18:00).

CastlereaghTokyo
12:00 AM8:00 AM
1:00 AM9:00 AM
2:00 AM10:00 AM
3:00 AM11:00 AM
4:00 AM12:00 PM
5:00 AM1:00 PM
6:00 AM2:00 PM
7:00 AM3:00 PM
8:00 AM4:00 PM
9:00 AM5:00 PM
10:00 AM6:00 PM
11:00 AM7:00 PM
12:00 PM8:00 PM
1:00 PM9:00 PM
2:00 PM10:00 PM
3:00 PM11:00 PM
4:00 PM12:00 AM+1 day
5:00 PM1:00 AM+1 day
6:00 PM2:00 AM+1 day
7:00 PM3:00 AM+1 day
8:00 PM4:00 AM+1 day
9:00 PM5:00 AM+1 day
10:00 PM6:00 AM+1 day
11:00 PM7:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Castlereagh (5:00 PM – 6:00 PM in Tokyo).

Daylight saving time and the difference

The difference changes during the year because Castlereagh and Tokyo switch clocks on different dates:

  • Oct 19, 2026 – Oct 25, 2026: +8h
  • Oct 25, 2026 – Mar 28, 2027: +9h
  • Mar 28, 2027 – Oct 19, 2027: +8h

Distance

Castlereagh and Tokyo are 9,452 km (5,873 miles) apart in a straight line.

More conversions

Tokyo to CastlereaghCastlereagh to New YorkCastlereagh to LondonCastlereagh to Los AngelesCastlereagh to ChicagoCastlereagh to TorontoCastlereagh to São PauloCastlereagh to ParisCastlereagh to BerlinCastlereagh to MoscowCastlereagh to DubaiCastlereagh to New DelhiCastlereagh to Bangkok
New York to TokyoLondon to TokyoLos Angeles to TokyoChicago to TokyoToronto to TokyoSão Paulo to TokyoParis to TokyoBerlin to TokyoMoscow to TokyoDubai to TokyoNew Delhi to TokyoBangkok to Tokyo

Questions and answers

What is the time difference between Castlereagh and Tokyo?

Tokyo is 8 hours ahead of Castlereagh.

What time is it in Tokyo when it is 9 AM in Castlereagh?

When it is 9:00 AM in Castlereagh, it is 5:00 PM in Tokyo.

When is the best time to call Tokyo from Castlereagh?

Both sides are at work from 9:00 AM – 10:00 AM in Castlereagh (5:00 PM – 6:00 PM in Tokyo).

Does the time difference between Castlereagh and Tokyo change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.