PDT to JST
+16hPDT
PDTSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and JST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
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.
Comparing Time Zones: PDT and JST
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts PDT 16 hours ahead of JST — a difference of +16h at the current offsets.
In practice, when it is 9:00 AM in PDT it is 1:00 AM in JST on the next day. Midnight in PDT is 4:00 PM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to JST time conversion table
| PDT (PDT) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | same day |
| 6:00 AM | 10:00 PM | same day |
| 7:00 AM | 11:00 PM | same day |
| 8:00 AM | 12:00 AM | next day |
| 9:00 AM | 1:00 AM | next day |
| 12:00 PM | 4:00 AM | next day |
| 3:00 PM | 7:00 AM | next day |
| 5:00 PM | 9:00 AM | next day |
| 6:00 PM | 10:00 AM | next day |
| 9:00 PM | 1:00 PM | next day |
Why people convert PDT to JST time
- Scheduling a call from PDT to JST: a 10:00 AM start in PDT lands at 2:00 AM in JST the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +16h gap: PDT 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 1:00 AM in PDT.
- Booking travel or deliveries: tracking JST local time against PDT keeps pickup windows and arrival estimates honest across the +16h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" 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 PDT takes the early slot, the next week JST does.
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.
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 PDT and JST
With a +16h offset there is no overlap inside a normal 9 AM – 5 PM day. JST opens at 9:00 AM JST, which is 1:00 AM in PDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PDT and JST have no shared working hours because of the +16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PDT is 16 hours ahead of JST (PDT UTC-07:00 → 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
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
JST
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 PDT and JST?
PDT (PDT, UTC-07:00) is 16 hours ahead of JST (JST, UTC+09:00). The gap is currently +16h.
How do I convert PDT time to JST time?
Add +16h to PDT local time. For example, 9:00 AM in PDT is 1:00 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 +16h offset from PDT.
What is the best time to call JST from PDT?
There is no shared working-hours window because of the +16h gap. The closest option is 1:00 PM in PDT, which is 5:00 AM in JST.
Which is ahead, PDT or JST?
PDT is 16 hours ahead of JST. When it is 12:00 PM in PDT it is 4:00 AM in JST.
Does daylight saving time affect the PDT–JST difference?
Neither zone observes daylight saving time, so the +16h offset between PDT and JST is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PDT and JST?
Sometimes. The +16h gap is large enough that 8:00 PM or later in PDT already falls on the next day in JST.
What is the time difference between PDT and JST?
JST is +16h from PDT.
What timezone is PDT in?
PDT operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
Which countries use PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
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 PDT, what time is it in JST?
When it is 12:00 AM (midnight) in PDT (PDT), it is +16h later in JST (JST).
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See every conversion from PDT →·See every conversion from JST →