Osaka to PDT
-16hOsaka
JSTSOURCEPDT
PDTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and PDT on the World Map
The map below highlights the JST (Japan Standard Time) and PDT (Pacific Daylight Time) timezone regions across the globe.
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.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
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.
Comparing Time Zones: Osaka and PDT
Osaka runs on Japan Standard Time (JST) at UTC+09:00. PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. That puts Osaka 16 hours behind PDT — a difference of -16h at the current offsets.
In practice, when it is 9:00 AM in Osaka it is 5:00 PM in PDT on the previous day. Midnight in Osaka is 8:00 AM in PDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Osaka to PDT time conversion table
| Osaka (JST) | PDT (PDT) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | previous day |
| 6:00 AM | 2:00 PM | previous day |
| 7:00 AM | 3:00 PM | previous day |
| 8:00 AM | 4:00 PM | previous day |
| 9:00 AM | 5:00 PM | previous day |
| 12:00 PM | 8:00 PM | previous day |
| 3:00 PM | 11:00 PM | previous day |
| 5:00 PM | 1:00 AM | same day |
| 6:00 PM | 2:00 AM | same day |
| 9:00 PM | 5:00 AM | same day |
Why people convert Osaka to PDT time
- Scheduling a call from Osaka to PDT: a 10:00 AM start in Osaka lands at 6:00 PM in PDT the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -16h gap: Osaka and PDT 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 PDT is 5:00 PM in Osaka.
- Watching a live event or market open: Osaka viewers need 5:00 PM in PDT to catch a 9:00 AM start there, and 4:00 PM if the event is anchored to Osaka.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -16h gap is not.
- With a -16h gap there is no shared 9-to-5 window, so alternate the early start: one week Osaka takes the early slot, the next week PDT does.
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.
About PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
Best time to call between Osaka and PDT
With a -16h offset there is no overlap inside a normal 9 AM – 5 PM day. PDT opens at 9:00 AM PDT, which is 5:00 PM in Osaka, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Osaka and PDT have no shared working hours because of the -16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Osaka is 16 hours behind PDT (JST UTC+09:00 → PDT UTC-07:00). 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
Osaka
Does not observe DST
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
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 Osaka and PDT?
Osaka (JST, UTC+09:00) is 16 hours behind PDT (PDT, UTC-07:00). The gap is currently -16h.
How do I convert Osaka time to PDT time?
Add -16h to Osaka local time. For example, 9:00 AM in Osaka is 5:00 PM in PDT (previous day).
What time is it in PDT right now?
PDT uses PDT at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -16h offset from Osaka.
What is the best time to call PDT from Osaka?
There is no shared working-hours window because of the -16h gap. The closest option is 1:00 PM in Osaka, which is 9:00 PM in PDT.
Which is behind, Osaka or PDT?
Osaka is 16 hours behind PDT. When it is 12:00 PM in Osaka it is 8:00 PM in PDT.
Do Osaka and PDT use different time zones?
Osaka (Japan) uses JST at UTC+09:00, while PDT uses PDT at UTC-07:00. The IANA identifiers are Asia/Tokyo and America/Los_Angeles.
Does daylight saving time affect the Osaka–PDT difference?
Neither zone observes daylight saving time, so the -16h offset between Osaka and PDT is fixed all year.
Which other cities share Osaka's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, Osaka's zone?
JST is used in Japan.
Is there a day difference between Osaka and PDT?
Sometimes. The -16h gap is large enough that 8:00 PM or later in Osaka already falls on the in PDT.
What is the time difference between Osaka and PDT?
PDT is -16h from Osaka.
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 timezone is PDT in?
PDT operates on its local timezone.
What are the business hours in Osaka?
Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the PDT timezone?
Major cities in the PDT timezone include Los Angeles, San Francisco, Seattle, Vancouver, Portland.
What is the UTC offset for PDT?
Pacific Daylight Time (PDT) is at UTC-07:00. During daylight saving time, it shifts to PST.
What should I know about the PDT timezone?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
When is it midnight in Osaka, what time is it in PDT?
When it is 12:00 AM (midnight) in Osaka (JST), it is -16h later in PDT (PDT).
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