Mexico to JST
+15hMexico
CSTSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and JST on the World Map
The map below highlights the CST (Central Standard Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
Mexico vs JST: Offsets, DST and Best Call Times
Mexico runs on Central Standard Time (CST) at UTC-06:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts Mexico 15 hours ahead of JST — a difference of +15h at the current offsets.
In practice, when it is 9:00 AM in Mexico it is 12:00 AM in JST on the next day. Midnight in Mexico is 3:00 PM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Mexico to JST time conversion table
| Mexico (CST) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | same day |
| 6:00 AM | 9:00 PM | same day |
| 7:00 AM | 10:00 PM | same day |
| 8:00 AM | 11:00 PM | same day |
| 9:00 AM | 12:00 AM | next day |
| 12:00 PM | 3:00 AM | next day |
| 3:00 PM | 6:00 AM | next day |
| 5:00 PM | 8:00 AM | next day |
| 6:00 PM | 9:00 AM | next day |
| 9:00 PM | 12:00 PM | next day |
Why people convert Mexico to JST time
- Scheduling a call from Mexico to JST: a 10:00 AM start in Mexico lands at 1:00 AM in JST the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +15h gap: Mexico and JST 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 JST is 12:00 AM in Mexico.
- Watching a live event or market open: Mexico viewers need 12:00 AM in JST to catch a 9:00 AM start there, and 9:00 AM if the event is anchored to Mexico.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +15h gap is not.
- With a +15h gap there is no shared 9-to-5 window, so alternate the early start: one week Mexico takes the early slot, the next week JST does.
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.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between Mexico and JST
With a +15h offset there is no overlap inside a normal 9 AM – 5 PM day. JST opens at 9:00 AM JST, which is 12:00 AM in Mexico, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Mexico and JST have no shared working hours because of the +15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Mexico is 15 hours ahead of JST (CST UTC-06:00 → JST UTC+09:00). 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 Mexico and JST?
Mexico (CST, UTC-06:00) is 15 hours ahead of JST (JST, UTC+09:00). The gap is currently +15h.
How do I convert Mexico time to JST time?
Add +15h to Mexico local time. For example, 9:00 AM in Mexico is 12:00 AM in JST (next day).
What time is it in JST right now?
JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +15h offset from Mexico.
What is the best time to call JST from Mexico?
There is no shared working-hours window because of the +15h gap. The closest option is 1:00 PM in Mexico, which is 4:00 AM in JST.
Which is ahead, Mexico or JST?
Mexico is 15 hours ahead of JST. When it is 12:00 PM in Mexico it is 3:00 AM in JST.
Do Mexico and JST use different time zones?
Mexico (Mexico) uses CST at UTC-06:00, while JST uses JST at UTC+09:00. The IANA identifiers are America/Mexico_City and Asia/Tokyo.
Does daylight saving time affect the Mexico–JST difference?
Neither zone observes daylight saving time, so the +15h offset between Mexico and JST is fixed all year.
Which other cities share Mexico's time zone?
CST also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CST, Mexico's zone?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.
Is there a day difference between Mexico and JST?
Sometimes. The +15h gap is large enough that 8:00 PM or later in Mexico already falls on the next day in JST.
What is the time difference between Mexico and JST?
JST is +15h from Mexico.
What timezone is Mexico in?
Mexico operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Mexico, what time is it in JST?
When it is 12:00 AM (midnight) in Mexico (CST), it is +15h later in JST (JST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Mexico time conversions
- mexico to mexico city
- mexico to new york
- mexico to london
- mexico to dubai
- mexico to tokyo
- mexico to singapore
- mexico to sydney
- mexico to los angeles
- mexico to paris
- mexico to delhi
- mexico to mumbai
- mexico to berlin
- mexico to hong kong
- mexico to toronto
- mexico to kathmandu
- new york to mexico
- london to mexico
- dubai to mexico
- tokyo to mexico
- singapore to mexico
- sydney to mexico
- los angeles to mexico
- paris to mexico
- delhi to mexico
- mumbai to mexico
- berlin to mexico
- hong kong to mexico
- toronto to mexico
- kathmandu to mexico
See every conversion from Mexico →·See every conversion from JST →