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Santiago to Osaka

+12h

Santiago

CLSTSOURCE
Chile · UTC-03:00☀ DST active
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

Osaka

JST
Japan · UTC+09:00
HH12
:
MM00
  
(next day)00:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
Santiago
Osaka
12:00 AM
12:00 PM
2:00 AM
2:00 PM
4:00 AM
4:00 PM
6:00 AM
6:00 PM
8:00 AM
8:00 PM
10:00 AM
10:00 PM
12:00 PM
12:00 AM+1
2:00 PM
2:00 AM+1
4:00 PM
4:00 AM+1
6:00 PM
6:00 AM+1
8:00 PM
8:00 AM+1
10:00 PM
10:00 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

CLST and JST on the World Map

The map below highlights the CLST (Chile Standard Time) and JST (Japan Standard Time) timezone regions across the globe.

CLSTJSTSantiagoValparaísoConcepciónViña del MarTokyoOsakaYokohamaNagoya
CLST Zone
→
JST Zone

Explore all world timezones interactively →

CLT – Chile Standard Time

UTC-04:00

Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.

Countries in CLT
Chile
Major Cities in CLT
SantiagoValparaísoConcepciónViña del MarAntofagasta
Key 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.
  • •Chile spans over 4,300 km from north to south but uses one timezone.
Daylight Saving:Yes – switches to CLST
Learn more about CLT on Wikipedia

JST – Japan Standard Time

UTC+09:00

Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.

Countries in JST
Japan
Major Cities in JST
TokyoOsakaYokohamaNagoyaSapporoKyotoKobeFukuokaHiroshima
Key Facts about JST
  • •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.
Daylight Saving:No – UTC+09:00 year-round
Learn more about JST on Wikipedia

About Osaka

Wikipedia

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.

Population:2.8 million
Metro:19 million
Business Hours:9:00 AM - 6:00 PM JST
Currency:JPY (¥)
Stock Exchange:OSE (Osaka Exchange - derivatives)
Key Landmarks
Osaka CastleDotonboriUniversal Studios JapanShitennoji TempleUmeda Sky Building
Did You Know?

Osaka Castle was originally built in 1583 and has been rebuilt several times.

Learn more about JST timezone →

Santiago to Osaka Time Difference – Complete Guide

Santiago runs on Chile Summer Time (CLST) at UTC-03:00, currently observing daylight saving time. Osaka runs on Japan Standard Time (JST) at UTC+09:00. That puts Santiago 12 hours ahead of Osaka — a difference of +12h at the current offsets.

In practice, when it is 9:00 AM in Santiago it is 9:00 PM in Osaka. Midnight in Santiago is 12:00 PM in Osaka.Santiago observes daylight saving time while Osaka does not, so the gap narrows or widens by an hour part of the year.

Santiago to Osaka time conversion table

Santiago (CLST)Osaka (JST)Day
12:00 AM12:00 PMsame day
6:00 AM6:00 PMsame day
7:00 AM7:00 PMsame day
8:00 AM8:00 PMsame day
9:00 AM9:00 PMsame day
12:00 PM12:00 AMnext day
3:00 PM3:00 AMnext day
5:00 PM5:00 AMnext day
6:00 PM6:00 AMnext day
9:00 PM9:00 AMnext day

Why people convert Santiago to Osaka time

  • Scheduling a call from Santiago to Osaka: a 10:00 AM start in Santiago lands at 10:00 PM in Osaka, so you can confirm the slot without doing the arithmetic yourself.
  • Handling a +12h gap: Santiago 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 9:00 PM in Santiago.
  • Keeping family and friends in sync: knowing that 8:00 PM in Santiago is 8:00 AM in Osaka makes it easy to avoid calling at 3 AM.
  • Always state the zone abbreviation, not just the hour. "3:00 PM CLST" is unambiguous; "3 PM" across a +12h gap is not.
  • With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week Santiago takes the early slot, the next week Osaka does.
  • Santiago: Clocks fall back on Sun, Apr 4, 2027. Re-check this page after that date because the offset changes and so does the +12h gap.

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 Santiago and Osaka

With a +12h offset there is no overlap inside a normal 9 AM – 5 PM day. Osaka opens at 9:00 AM JST, which is 9:00 PM in Santiago, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Santiago and Osaka have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Santiago is 12 hours ahead of Osaka (CLST UTC-03:00 → 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

Santiago

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Apr 4, 2027

Osaka

Does not observe DST

Frequently Asked Questions

What is the time difference between Santiago and Osaka?

Santiago (CLST, UTC-03:00) is 12 hours ahead of Osaka (JST, UTC+09:00). The gap is currently +12h.

How do I convert Santiago time to Osaka time?

Add +12h to Santiago local time. For example, 9:00 AM in Santiago is 9:00 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 +12h offset from Santiago.

What is the best time to call Osaka from Santiago?

There is no shared working-hours window because of the +12h gap. The closest option is 1:00 PM in Santiago, which is 1:00 AM in Osaka.

Which is ahead, Santiago or Osaka?

Santiago is 12 hours ahead of Osaka. When it is 12:00 PM in Santiago it is 12:00 AM in Osaka.

Do Santiago and Osaka use different time zones?

Santiago (Chile) uses CLST at UTC-03:00, while Osaka (Japan) uses JST at UTC+09:00. The IANA identifiers are America/Santiago and Asia/Tokyo.

Does daylight saving time affect the Santiago–Osaka difference?

Yes at the moment: Santiago is on daylight saving time and Osaka is not, so the +12h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Santiago's time zone?

CLST also covers Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.

Which countries use CLST, Santiago's zone?

CLST is used in Chile.

Is there a day difference between Santiago and Osaka?

Sometimes. The +12h gap is large enough that 8:00 PM or later in Santiago already falls on the next day in Osaka.

What is the time difference between Santiago and Osaka?

Osaka is +12h from Santiago.

What timezone is Santiago in?

Santiago 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 Santiago, what time is it in Osaka?

When it is 12:00 AM (midnight) in Santiago (CLT), it is +12h later in Osaka (JST).