London to Mexico
-7hLondon
BSTSOURCEMexico
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and CST on the World Map
The map below highlights the BST (Greenwich Mean Time) and CST (Central Standard Time) timezone regions across the globe.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
About London
WikipediaLondon, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.
Everything You Need to Know About London and Mexico Time
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. Mexico runs on Central Standard Time (CST) at UTC-06:00. That puts London 7 hours behind Mexico — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in London it is 2:00 AM in Mexico. Midnight in London is 5:00 PM in Mexico.London observes daylight saving time while Mexico does not, so the gap narrows or widens by an hour part of the year.
London to Mexico time conversion table
| London (BST) | Mexico (CST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert London to Mexico time
- Scheduling a call from London to Mexico: a 10:00 AM start in London lands at 3:00 AM in Mexico, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and Mexico are inside the 9-to-5 working day between 4:00 PM and 5:00 PM BST time (9:00 AM–10:00 AM CST). That is roughly 1 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in London is 1:00 PM in Mexico makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM BST as the recurring meeting window if you work primarily from London and need Mexico colleagues present.
- London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -7h gap.
About GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
Best time to call between London and Mexico
Both London and Mexico sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM BST, which is 9:00 AM–10:00 AM CST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
London and Mexico overlap for only 60 minutes (4:00 PM–5:00 PM BST), so meetings have to be booked precisely.
London is 7 hours behind Mexico (BST UTC+01:00 → CST UTC-06:00). The shared working window is 4:00 PM–5:00 PM BST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
London
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Mexico
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between London and Mexico?
London (BST, UTC+01:00) is 7 hours behind Mexico (CST, UTC-06:00). The gap is currently -7h.
How do I convert London time to Mexico time?
Add -7h to London local time. For example, 9:00 AM in London is 2:00 AM in Mexico.
What time is it in Mexico right now?
Mexico uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from London.
What is the best time to call Mexico from London?
Call between 4:00 PM and 5:00 PM BST — that maps to 9:00 AM–10:00 AM CST and keeps both parties inside the working day.
Which is behind, London or Mexico?
London is 7 hours behind Mexico. When it is 12:00 PM in London it is 5:00 AM in Mexico.
Do London and Mexico use different time zones?
London (UK) uses BST at UTC+01:00, while Mexico (Mexico) uses CST at UTC-06:00. The IANA identifiers are Europe/London and America/Mexico_City.
Does daylight saving time affect the London–Mexico difference?
Yes at the moment: London is on daylight saving time and Mexico is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share London's time zone?
BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use BST, London's zone?
BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between London and Mexico?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between London and Mexico?
Mexico is -7h from London.
What timezone is London in?
London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
What timezone is Mexico in?
Mexico operates on its local timezone.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
Which countries use GMT (Greenwich Mean Time)?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.
Does GMT observe daylight saving time?
Yes, GMT switches to BST during summer months.
What are some interesting facts about GMT?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
Which cities are in the CST timezone?
Major cities in the CST timezone include Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis.
What is the UTC offset for CST?
Central Standard Time (CST) is at UTC-06:00. During daylight saving time, it shifts to CDT.
What should I know about the CST timezone?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
When is it midnight in London, what time is it in Mexico?
When it is 12:00 AM (midnight) in London (GMT), it is -7h later in Mexico (CST).
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