CLT to Osaka
+13hCLT
CLTSOURCEOsaka
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
CLT and JST on the World Map
The map below highlights the CLT (Chile Standard Time) and JST (Japan Standard Time) timezone regions across the globe.
CLT – Chile Standard Time
UTC-04:00Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.
- •Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer.
- •Santiago is the largest city in Chile with over 6 million in the metro area.
- •Chile spans over 4,300 km from north to south but uses one timezone.
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 Osaka
WikipediaOsaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
Osaka Castle was originally built in 1583 and has been rebuilt several times.
Time Conversion Guide: CLT to Osaka
CLT runs on Chile Standard Time (CLT) at UTC-04:00. Osaka runs on Japan Standard Time (JST) at UTC+09:00. That puts CLT 13 hours ahead of Osaka — a difference of +13h at the current offsets.
In practice, when it is 9:00 AM in CLT it is 10:00 PM in Osaka. Midnight in CLT is 1:00 PM in Osaka. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CLT to Osaka time conversion table
| CLT (CLT) | Osaka (JST) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | same day |
| 6:00 AM | 7:00 PM | same day |
| 7:00 AM | 8:00 PM | same day |
| 8:00 AM | 9:00 PM | same day |
| 9:00 AM | 10:00 PM | same day |
| 12:00 PM | 1:00 AM | next day |
| 3:00 PM | 4:00 AM | next day |
| 5:00 PM | 6:00 AM | next day |
| 6:00 PM | 7:00 AM | next day |
| 9:00 PM | 10:00 AM | next day |
Why people convert CLT to Osaka time
- Scheduling a call from CLT to Osaka: a 10:00 AM start in CLT lands at 11:00 PM in Osaka, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +13h gap: CLT and Osaka 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 Osaka is 10:00 PM in CLT.
- Coordinating a CLT-based team with Osaka contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM CLT" is unambiguous; "3 PM" across a +13h gap is not.
- With a +13h gap there is no shared 9-to-5 window, so alternate the early start: one week CLT takes the early slot, the next week Osaka does.
About CLT (Chile Standard Time)
Chile Standard Time (CLT) is the standard time in Chile. During summer months (October to March), Chile switches to Chile Summer Time (CLST, UTC-03:00). Chile is the longest north-south country in the world.
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 CLT and Osaka
With a +13h offset there is no overlap inside a normal 9 AM – 5 PM day. Osaka opens at 9:00 AM JST, which is 10:00 PM in CLT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
CLT and Osaka have no shared working hours because of the +13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
CLT is 13 hours ahead of Osaka (CLT UTC-04:00 → 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
CLT
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Apr 4, 2027
Osaka
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 CLT and Osaka?
CLT (CLT, UTC-04:00) is 13 hours ahead of Osaka (JST, UTC+09:00). The gap is currently +13h.
How do I convert CLT time to Osaka time?
Add +13h to CLT local time. For example, 9:00 AM in CLT is 10:00 PM in Osaka.
What time is it in Osaka right now?
Osaka 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 +13h offset from CLT.
What is the best time to call Osaka from CLT?
There is no shared working-hours window because of the +13h gap. The closest option is 1:00 PM in CLT, which is 2:00 AM in Osaka.
Which is ahead, CLT or Osaka?
CLT is 13 hours ahead of Osaka. When it is 12:00 PM in CLT it is 1:00 AM in Osaka.
Do CLT and Osaka use different time zones?
CLT uses CLT at UTC-04:00, while Osaka (Japan) uses JST at UTC+09:00. The IANA identifiers are America/Santiago and Asia/Tokyo.
Does daylight saving time affect the CLT–Osaka difference?
Neither zone observes daylight saving time, so the +13h offset between CLT and Osaka is fixed all year.
Which other cities share CLT's time zone?
CLT also covers Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.
Which countries use CLT, CLT's zone?
CLT is used in Chile.
Is there a day difference between CLT and Osaka?
Sometimes. The +13h gap is large enough that 8:00 PM or later in CLT already falls on the next day in Osaka.
What is the time difference between CLT and Osaka?
Osaka is +13h from CLT.
What timezone is CLT in?
CLT operates on its local timezone.
What timezone is Osaka in?
Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
What are the business hours in Osaka?
Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.
Which countries use CLT (Chile Standard Time)?
CLT is used in Chile.
Does CLT observe daylight saving time?
Yes, CLT switches to CLST during summer months.
What are some interesting facts about CLT?
Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer. Santiago is the largest city in Chile with over 6 million in the metro area.
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 CLT, what time is it in Osaka?
When it is 12:00 AM (midnight) in CLT (CLT), it is +13h later in Osaka (JST).
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