Chicago to Japan
+14hChicago
CDTSOURCEJapan
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and JST on the World Map
The map below highlights the CDT (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.
About Chicago
WikipediaChicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
The Chicago Board of Trade is the world's oldest futures and options exchange.
Time Conversion Guide: Chicago to Japan
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. Japan runs on Japan Standard Time (JST) at UTC+09:00. That puts Chicago 14 hours ahead of Japan — a difference of +14h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 11:00 PM in Japan. Midnight in Chicago is 2:00 PM in Japan.Chicago observes daylight saving time while Japan does not, so the gap narrows or widens by an hour part of the year.
Chicago to Japan time conversion table
| Chicago (CDT) | Japan (JST) | Day |
|---|---|---|
| 12:00 AM | 2:00 PM | same day |
| 6:00 AM | 8:00 PM | same day |
| 7:00 AM | 9:00 PM | same day |
| 8:00 AM | 10:00 PM | same day |
| 9:00 AM | 11:00 PM | same day |
| 12:00 PM | 2:00 AM | next day |
| 3:00 PM | 5:00 AM | next day |
| 5:00 PM | 7:00 AM | next day |
| 6:00 PM | 8:00 AM | next day |
| 9:00 PM | 11:00 AM | next day |
Why people convert Chicago to Japan time
- Scheduling a call from Chicago to Japan: a 10:00 AM start in Chicago lands at 12:00 AM in Japan the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +14h gap: Chicago and Japan 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 Japan is 11:00 PM in Chicago.
- Keeping family and friends in sync: knowing that 8:00 PM in Chicago is 10:00 AM in Japan makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +14h gap is not.
- With a +14h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week Japan does.
- Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +14h gap.
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 Chicago and Japan
With a +14h offset there is no overlap inside a normal 9 AM – 5 PM day. Japan opens at 9:00 AM JST, which is 11:00 PM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Chicago and Japan have no shared working hours because of the +14h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Chicago is 14 hours ahead of Japan (CDT UTC-05:00 → 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.
🕐 Daylight Saving Time Info
Chicago
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
Japan
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 Chicago and Japan?
Chicago (CDT, UTC-05:00) is 14 hours ahead of Japan (JST, UTC+09:00). The gap is currently +14h.
How do I convert Chicago time to Japan time?
Add +14h to Chicago local time. For example, 9:00 AM in Chicago is 11:00 PM in Japan.
What time is it in Japan right now?
Japan 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 +14h offset from Chicago.
What is the best time to call Japan from Chicago?
There is no shared working-hours window because of the +14h gap. The closest option is 1:00 PM in Chicago, which is 3:00 AM in Japan.
Which is ahead, Chicago or Japan?
Chicago is 14 hours ahead of Japan. When it is 12:00 PM in Chicago it is 2:00 AM in Japan.
Do Chicago and Japan use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while Japan (Japan) uses JST at UTC+09:00. The IANA identifiers are America/Chicago and Asia/Tokyo.
Does daylight saving time affect the Chicago–Japan difference?
Yes at the moment: Chicago is on daylight saving time and Japan is not, so the +14h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Chicago's time zone?
CDT also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CDT, Chicago's zone?
CDT 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 Chicago and Japan?
Sometimes. The +14h gap is large enough that 8:00 PM or later in Chicago already falls on the next day in Japan.
What is the time difference between Chicago and Japan?
Japan is +14h from Chicago.
What timezone is Chicago in?
Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
What timezone is Japan in?
Japan operates on its local timezone.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
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 Chicago, what time is it in Japan?
When it is 12:00 AM (midnight) in Chicago (CST), it is +14h later in Japan (JST).
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