GMT to Mexico City
-6hGMT
GMTSOURCEMexico City
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
GMT and CST on the World Map
The map below highlights the GMT (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 Mexico City
WikipediaMexico City operates on Central Time (CST/CDT), same as Chicago. As North America's largest city, Mexico City bridges US and Latin American business hours.
Mexico City is the oldest capital city in the Americas.
Everything You Need to Know About GMT and Mexico City Time
GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. Mexico City runs on Central Standard Time (CST) at UTC-06:00. That puts GMT 6 hours behind Mexico City — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in GMT it is 3:00 AM in Mexico City. Midnight in GMT is 6:00 PM in Mexico City. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GMT to Mexico City time conversion table
| GMT (GMT) | Mexico City (CST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert GMT to Mexico City time
- Scheduling a call from GMT to Mexico City: a 10:00 AM start in GMT lands at 4:00 AM in Mexico City, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GMT and Mexico City are inside the 9-to-5 working day between 3:00 PM and 5:00 PM GMT time (9:00 AM–11:00 AM CST). That is roughly 2 hours of usable overlap.
- Watching a live event or market open: GMT viewers need 3:00 AM in Mexico City to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to GMT.
- Always state the zone abbreviation, not just the hour. "3:00 PM GMT" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM GMT as the recurring meeting window if you work primarily from GMT and need Mexico City colleagues present.
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 GMT and Mexico City
Both GMT and Mexico City sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM GMT, which is 9:00 AM–11:00 AM CST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GMT and Mexico City overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
GMT is 6 hours behind Mexico City (GMT UTC+00:00 → CST UTC-06:00). The shared working window is 3:00 PM–5:00 PM GMT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Mexico City
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 GMT and Mexico City?
GMT (GMT, UTC+00:00) is 6 hours behind Mexico City (CST, UTC-06:00). The gap is currently -6h.
How do I convert GMT time to Mexico City time?
Add -6h to GMT local time. For example, 9:00 AM in GMT is 3:00 AM in Mexico City.
What time is it in Mexico City right now?
Mexico City 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 -6h offset from GMT.
What is the best time to call Mexico City from GMT?
Call between 3:00 PM and 5:00 PM GMT — that maps to 9:00 AM–11:00 AM CST and keeps both parties inside the working day.
Which is behind, GMT or Mexico City?
GMT is 6 hours behind Mexico City. When it is 12:00 PM in GMT it is 6:00 AM in Mexico City.
Do GMT and Mexico City use different time zones?
GMT uses GMT at UTC+00:00, while Mexico City (Mexico) uses CST at UTC-06:00. The IANA identifiers are Europe/London and America/Mexico_City.
Does daylight saving time affect the GMT–Mexico City difference?
Neither zone observes daylight saving time, so the -6h offset between GMT and Mexico City is fixed all year.
Which other cities share GMT's time zone?
GMT also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use GMT, GMT's zone?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between GMT and Mexico City?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between GMT and Mexico City?
Mexico City is -6h from GMT.
What timezone is GMT in?
GMT operates on its local timezone.
What timezone is Mexico City in?
Mexico City operates on Central Time (CST/CDT), same as Chicago. As North America's largest city, Mexico City bridges US and Latin American business hours.
What are the business hours in Mexico City?
Standard business hours in Mexico City are 9:00 AM - 6:00 PM CST.
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 GMT, what time is it in Mexico City?
When it is 12:00 AM (midnight) in GMT (GMT), it is -6h later in Mexico City (CST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More GMT time conversions
- gmt to london
- gmt to bst
- gmt to uk
- gmt to new york
- gmt to dubai
- gmt to tokyo
- gmt to singapore
- gmt to sydney
- gmt to los angeles
- gmt to paris
- gmt to delhi
- gmt to mumbai
- gmt to berlin
- gmt to hong kong
- gmt to toronto
- gmt to kathmandu
- new york to gmt
- london to gmt
- dubai to gmt
- tokyo to gmt
- singapore to gmt
- sydney to gmt
- los angeles to gmt
- paris to gmt
- delhi to gmt
- mumbai to gmt
- berlin to gmt
- hong kong to gmt
- toronto to gmt
- kathmandu to gmt
See every conversion from GMT →·See every conversion from Mexico City →