Tehran to Mexico City
-9h 30mTehran
IRSTSOURCEMexico City
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
IRST and CST on the World Map
The map below highlights the IRST (Iran Standard Time) and CST (Central Standard Time) timezone regions across the globe.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
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 Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
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 Tehran and Mexico City Time
Tehran runs on Iran Standard Time (IRST) at UTC+03:30. Mexico City runs on Central Standard Time (CST) at UTC-06:00. That puts Tehran 9 hours 30 minutes behind Mexico City — a difference of -9h 30m at the current offsets.
In practice, when it is 9:00 AM in Tehran it is 11:30 PM in Mexico City on the previous day. Midnight in Tehran is 2:30 PM in Mexico City. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Tehran to Mexico City time conversion table
| Tehran (IRST) | Mexico City (CST) | Day |
|---|---|---|
| 12:00 AM | 2:30 PM | previous day |
| 6:00 AM | 8:30 PM | previous day |
| 7:00 AM | 9:30 PM | previous day |
| 8:00 AM | 10:30 PM | previous day |
| 9:00 AM | 11:30 PM | previous day |
| 12:00 PM | 2:30 AM | same day |
| 3:00 PM | 5:30 AM | same day |
| 5:00 PM | 7:30 AM | same day |
| 6:00 PM | 8:30 AM | same day |
| 9:00 PM | 11:30 AM | same day |
Why people convert Tehran to Mexico City time
- Scheduling a call from Tehran to Mexico City: a 10:00 AM start in Tehran lands at 12:30 AM in Mexico City, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h 30m gap: Tehran and Mexico City have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Mexico City is 11:30 PM in Tehran.
- Booking travel or deliveries: tracking Mexico City local time against Tehran keeps pickup windows and arrival estimates honest across the -9h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a -9h 30m gap is not.
- With a -9h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Tehran takes the early slot, the next week Mexico City does.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
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 Tehran and Mexico City
With a -9h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Mexico City opens at 9:00 AM CST, which is 11:30 PM in Tehran, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Tehran and Mexico City have no shared working hours because of the -9h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Tehran is 9 hours 30 minutes behind Mexico City (IRST UTC+03:30 → CST UTC-06:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
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 Tehran and Mexico City?
Tehran (IRST, UTC+03:30) is 9 hours 30 minutes behind Mexico City (CST, UTC-06:00). The gap is currently -9h 30m.
How do I convert Tehran time to Mexico City time?
Add -9h 30m to Tehran local time. For example, 9:00 AM in Tehran is 11:30 PM in Mexico City (previous day).
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 -9h 30m offset from Tehran.
What is the best time to call Mexico City from Tehran?
There is no shared working-hours window because of the -9h 30m gap. The closest option is 1:00 PM in Tehran, which is 3:30 AM in Mexico City.
Which is behind, Tehran or Mexico City?
Tehran is 9 hours 30 minutes behind Mexico City. When it is 12:00 PM in Tehran it is 2:30 AM in Mexico City.
Do Tehran and Mexico City use different time zones?
Tehran (Iran) uses IRST at UTC+03:30, while Mexico City (Mexico) uses CST at UTC-06:00. The IANA identifiers are Asia/Tehran and America/Mexico_City.
Does daylight saving time affect the Tehran–Mexico City difference?
Neither zone observes daylight saving time, so the -9h 30m offset between Tehran and Mexico City is fixed all year.
Which other cities share Tehran's time zone?
IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
Which countries use IRST, Tehran's zone?
IRST is used in Iran.
Is there a day difference between Tehran and Mexico City?
Not normally. The -9h 30m gap only pushes the date over the previous day.
What is the time difference between Tehran and Mexico City?
Mexico City is -9h 30m from Tehran.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
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 Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
What are the business hours in Mexico City?
Standard business hours in Mexico City are 9:00 AM - 6:00 PM CST.
What is the best time to schedule a call between Tehran and Mexico City?
The best overlap for a call is when both cities are in business hours. Tehran works 8:00 AM - 4:00 PM IRST and Mexico City works 9:00 AM - 6:00 PM CST (-9h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Tehran and Mexico City?
Tehran uses IRR (﷼) while Mexico City uses MXN ($). Check current exchange rates when planning travel or business between these cities.
How do Tehran and Mexico City compare in size?
Tehran has a population of approximately 9.4 million (metro: 16.8 million), while Mexico City has approximately 9.2 million (metro: 21.8 million).
What are the major landmarks in Tehran and Mexico City?
Tehran is known for Azadi Tower, Golestan Palace, Grand Bazaar. Mexico City is famous for Zócalo, Palacio de Bellas Artes, Chapultepec Castle.
Do Tehran and Mexico City have stock exchanges?
Yes. Tehran has the TSE (Tehran Stock Exchange) and Mexico City has the BMV (Bolsa Mexicana de Valores). The -9h 30m time difference affects trading hour overlaps between these exchanges.
Which countries use IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting facts about IRST?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
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 Tehran, what time is it in Mexico City?
When it is 12:00 AM (midnight) in Tehran (IRST), it is -9h 30m later in Mexico City (CST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Tehran time conversions
- tehran to irst
- tehran to iran
- tehran to dubai
- tehran to mumbai
- tehran to delhi
- tehran to bangalore
- tehran to kathmandu
- tehran to bangkok
- tehran to singapore
- tehran to hong kong
- tehran to shanghai
- tehran to beijing
- tehran to tokyo
- tehran to osaka
- tehran to new york
- tehran to london
- tehran to sydney
- tehran to los angeles
- tehran to paris
- tehran to berlin
- tehran to toronto
- new york to tehran
- london to tehran
- dubai to tehran
- tokyo to tehran
- singapore to tehran
- sydney to tehran
- los angeles to tehran
- paris to tehran
- delhi to tehran
- mumbai to tehran
- berlin to tehran
- hong kong to tehran
- toronto to tehran
- kathmandu to tehran
See every conversion from Tehran →·See every conversion from Mexico City →