How many hours is London ahead of Mexico City?

It is 6 hours during the GMT season and 7 hours during British Summer Time. Mexico City stays on CST (UTC−6) year-round, so the offset changes only when the UK switches its clocks in late March and late October.

Does Mexico City observe daylight saving time?

No. Mexico abolished DST in October 2022. Mexico City now stays on permanent CST (UTC−6) year-round.

What time zone is London on?

London uses GMT (UTC+0) from late October to late March, and BST (British Summer Time, UTC+1) from late March to late October.

What is the best overlap time for a call between London and Mexico City?

With London 6 hours ahead, mornings in London (9 AM–12 PM) correspond to late evening the previous day or early morning in Mexico City. The most practical overlap is typically 3 PM–5 PM London time, which is 9 AM–11 AM Mexico City time.

Is this tool accurate for future dates?

Yes. The Intl API uses the IANA time zone database, which contains historical and future DST rules for both Europe/London and America/Mexico_City.

Time Difference: London to Mexico City

See the live time difference between London and Mexico City, and convert any specific time between the two cities.

Live Clocks

London

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GMT/BST

Mexico City

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CST

Current offset: calculating…

Convert a Time

Date & Time

This time is in

London Mexico City

When does the offset change?

Winter (late Oct–late Mar)

London GMT (UTC+0) · Mexico City CST (UTC−6)

London is 6 h ahead

Summer (late Mar–late Oct)

London BST (UTC+1) · Mexico City CST (UTC−6)

London is 7 h ahead

No Mexico DST

Mexico abolished daylight saving in October 2022, so Mexico City stays on CST (UTC−6) year-round. The offset changes only when London switches DST.

Summary

London operates on GMT (UTC+0) in winter and BST (UTC+1) during British Summer Time (late March to late October). Mexico City is permanently on CST (UTC−6) — Mexico abolished daylight saving time in 2022. The offset is therefore 6 hours during the GMT season and 7 hours during the BST season, with London always ahead of Mexico City.

How it works

The tool reads your browser clock and converts it to both London (Europe/London) and Mexico City (America/Mexico_City) time zones using the Intl API.
The current offset is computed live from the UTC offsets of each zone, accounting for daylight saving rules automatically.
To convert a custom time, enter a date and time, choose whether it is a London or Mexico City time, and click Convert.
The result shows the equivalent time in the other city along with the UTC offsets active on that date.

Use cases

Schedule a video call between a London office and Mexico City colleagues.
Check whether your Mexico City contact is still in business hours.
Plan a webinar or live event that works for both audiences.
Convert a flight departure time from one city to local arrival time in the other.
Coordinate cross-border project deadlines accurately.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu