Tonga to London time converter

London is 12 hours behind Tonga. When it is 9:00 AM in Tonga, it is 9:00 PM (Sun, Oct 18) in London.

Tonga UTC+13

Monday, October 19, 2026

London BST

Sunday, October 18, 2026

Tonga
Mon, Oct 19
UTC+13
London
United Kingdom
Sun, Oct 18
BSTUTC+1-12h
Finding your time zone…
Shared working hours (9:00–18:00)

Tonga to London conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in Tonga (9:00 PM – 10:00 PM in London): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Tonga and London switch clocks on different dates:

  • Oct 19, 2026 – Oct 25, 2026: -12h
  • Oct 25, 2026 – Mar 28, 2027: -13h
  • Mar 28, 2027 – Oct 19, 2027: -12h

More conversions

London to TongaTonga to New YorkTonga to Los AngelesTonga to ChicagoTonga to TorontoTonga to São PauloTonga to ParisTonga to BerlinTonga to MoscowTonga to DubaiTonga to New DelhiTonga to BangkokTonga to Singapore
New York to LondonLos Angeles to LondonChicago to LondonToronto to LondonSão Paulo to LondonParis to LondonBerlin to LondonMoscow to LondonDubai to LondonNew Delhi to LondonBangkok to LondonSingapore to London

Questions and answers

What is the time difference between Tonga and London?

London is 12 hours behind Tonga.

What time is it in London when it is 9 AM in Tonga?

When it is 9:00 AM in Tonga, it is 9:00 PM (Sun, Oct 18) in London.

When is the best time to call London from Tonga?

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in Tonga (9:00 PM – 10:00 PM in London): working hours on one side, early or late on the other.

Does the time difference between Tonga and London change?

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