JST to PDT Converter & Meeting Planner
Quick answer: 9:00 AM JST = 5:00 PM PDT (fixed +09:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Japan Standard Time (JST) and Pacific Daylight Time (PDT)? You need to account for the standard time difference. Pacific Daylight Time is normally 16 hours behind Japan Standard Time. Whether you are coordinating between teams in Tokyo and Osaka and Los Angeles and San Francisco, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM JST = 8:00 AM PDT. The full 24-hour JST to PDT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM JST = 11:00 PM PDT (-1 day).
| JST Time | PDT Time |
|---|---|
| 12:00 AM (00:00) | 8:00 AM (08:00)-1 day |
| 1:00 AM (01:00) | 9:00 AM (09:00)-1 day |
| 2:00 AM (02:00) | 10:00 AM (10:00)-1 day |
| 3:00 AM (03:00) | 11:00 AM (11:00)-1 day |
| 4:00 AM (04:00) | 12:00 PM (12:00)-1 day |
| 5:00 AM (05:00) | 1:00 PM (13:00)-1 day |
| 6:00 AM (06:00) | 2:00 PM (14:00)-1 day |
| 7:00 AM (07:00) | 3:00 PM (15:00)-1 day |
| 8:00 AM (08:00) | 4:00 PM (16:00)-1 day |
| 9:00 AM (09:00) | 5:00 PM (17:00)-1 day |
| 10:00 AM (10:00) | 6:00 PM (18:00)-1 day |
| 11:00 AM (11:00) | 7:00 PM (19:00)-1 day |
| 12:00 PM (12:00) | 8:00 PM (20:00)-1 day |
| 1:00 PM (13:00) | 9:00 PM (21:00)-1 day |
| 2:00 PM (14:00) | 10:00 PM (22:00)-1 day |
| 3:00 PM (15:00) | 11:00 PM (23:00)-1 day |
| 4:00 PM (16:00) | 12:00 AM (00:00) |
| 5:00 PM (17:00) | 1:00 AM (01:00) |
| 6:00 PM (18:00) | 2:00 AM (02:00) |
| 7:00 PM (19:00) | 3:00 AM (03:00) |
| 8:00 PM (20:00) | 4:00 AM (04:00) |
| 9:00 PM (21:00) | 5:00 AM (05:00) |
| 10:00 PM (22:00) | 6:00 AM (06:00) |
| 11:00 PM (23:00) | 7:00 AM (07:00) |
Best time to call Los Angeles from Tokyo
For most work calls, compare the normal business day in Tokyo (JST) with the business day in Los Angeles (PDT). JST commonly covers East Asia, while PDT is mainly associated with North America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 10:00 AM JST, which corresponds to 5:00 PM - 6:00 PM PDT. This window sits inside the typical JST workday (9:00 AM - 6:00 PM) and the PDT workday (9:00 AM - 6:00 PM).
- DST Safety: JST or PDT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Tokyo Stock Exchange (TSE): 09:00-15:00 local time in Tokyo.
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Frequently Asked Questions
What is the time difference between JST and PDT?
During standard time, Pacific Daylight Time is 16 hours behind Japan Standard Time.
Does Japan observe Daylight Saving Time?
Japan has not observed Daylight Saving Time since 1951, when the practice introduced during the Allied occupation was abolished by the Japanese government. JST has remained fixed at UTC+9:00 ever since, and there is no current legislation to reintroduce DST in Japan.
Is JST the same as Korean Standard Time (KST)?
Yes, South Korea's Korean Standard Time (KST) operates at the same UTC+9:00 offset as JST, and South Korea also does not observe Daylight Saving Time. The two countries share an identical clock year-round, which simplifies scheduling for the significant trade, technology, and cultural exchange between Tokyo and Seoul.
When does PDT start and end?
PDT begins on the second Sunday in March at 02:00 local time, when clocks spring forward one hour from PST (UTC-8) to PDT (UTC-7). It ends on the first Sunday in November at 02:00 local time, when clocks fall back to PST. In 2026, PDT runs from March 8 through November 1 — covering the majority of the calendar year.
Is PDT the same as PST?
PDT and PST are two phases of the same Pacific Time zone, not two separate zones. PST (Pacific Standard Time) is the winter offset at UTC-8, observed from early November through mid-March. PDT (Pacific Daylight Time) is the summer offset at UTC-7, active during Daylight Saving Time — meaning Los Angeles, Seattle, and Vancouver run one hour ahead of their winter clock for approximately eight months of every year.