Mason City to London time converter

London is 6 hours ahead of Mason City. When it is 9:00 AM in Mason City, it is 3:00 PM in London.

Mason City CDT

Tuesday, October 20, 2026

London BST

Wednesday, October 21, 2026

Mason City
Iowa, United States
Tue, Oct 20
CDTUTC-5
London
United Kingdom
Wed, Oct 21
BSTUTC+1+6h
Finding your time zone…
Shared working hours (9:00–18:00)

Mason City to London conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 12:00 PM in Mason City (3:00 PM – 6:00 PM in London).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 24, 2026: +6h
  • Oct 24, 2026 – Nov 1, 2026: +5h
  • Nov 1, 2026 – Mar 14, 2027: +6h
  • Mar 14, 2027 – Mar 27, 2027: +5h
  • Mar 27, 2027 – Oct 20, 2027: +6h

Distance

Mason City and London are 6,591 km (4,095 miles) apart in a straight line.

More conversions

London to Mason CityMason City to New YorkMason City to Los AngelesMason City to ChicagoMason City to TorontoMason City to São PauloMason City to ParisMason City to BerlinMason City to MoscowMason City to DubaiMason City to New DelhiMason City to BangkokMason City 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 Mason City and London?

London is 6 hours ahead of Mason City.

What time is it in London when it is 9 AM in Mason City?

When it is 9:00 AM in Mason City, it is 3:00 PM in London.

When is the best time to call London from Mason City?

Both sides are at work from 9:00 AM – 12:00 PM in Mason City (3:00 PM – 6:00 PM in London).

Does the time difference between Mason City 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.