London to San Marcos time converter

San Marcos is 8 hours behind London. When it is 9:00 AM in London, it is 1:00 AM in San Marcos.

London BST

Wednesday, October 21, 2026

San Marcos PDT

Tuesday, October 20, 2026

London
United Kingdom
Wed, Oct 21
BSTUTC+1
San Marcos
California, United States
Tue, Oct 20
PDTUTC-7-8h
Finding your time zone…
Shared working hours (9:00–18:00)

London to San Marcos conversion table

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

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

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in London (9:00 AM – 10:00 AM in San Marcos).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Nov 1, 2026: -7h
  • Nov 1, 2026 – Mar 14, 2027: -8h
  • Mar 14, 2027 – Mar 28, 2027: -7h
  • Mar 28, 2027 – Oct 21, 2027: -8h

Distance

London and San Marcos are 8,783 km (5,458 miles) apart in a straight line.

More conversions

San Marcos to LondonLondon to New YorkLondon to Los AngelesLondon to ChicagoLondon to TorontoLondon to São PauloLondon to ParisLondon to BerlinLondon to MoscowLondon to DubaiLondon to New DelhiLondon to BangkokLondon to Singapore
New York to San MarcosLos Angeles to San MarcosChicago to San MarcosToronto to San MarcosSão Paulo to San MarcosParis to San MarcosBerlin to San MarcosMoscow to San MarcosDubai to San MarcosNew Delhi to San MarcosBangkok to San MarcosSingapore to San Marcos

Questions and answers

What is the time difference between London and San Marcos?

San Marcos is 8 hours behind London.

What time is it in San Marcos when it is 9 AM in London?

When it is 9:00 AM in London, it is 1:00 AM in San Marcos.

When is the best time to call San Marcos from London?

Both sides are at work from 5:00 PM – 6:00 PM in London (9:00 AM – 10:00 AM in San Marcos).

Does the time difference between London and San Marcos change?

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