Japan Time to PST Converter
Convert Japan Standard Time (JST) to Pacific Standard Time (PST) instantly
Complete JST to PST Conversion Table
| Japan Standard Time (JST) | Pacific Standard Time (PST) | Date Change |
|---|---|---|
| 12:00 AM (Midnight) | 7:00 AM | Previous Day |
| 1:00 AM | 8:00 AM | Previous Day |
| 2:00 AM | 9:00 AM | Previous Day |
| 3:00 AM | 10:00 AM | Previous Day |
| 4:00 AM | 11:00 AM | Previous Day |
| 5:00 AM | 12:00 PM (Noon) | Previous Day |
| 6:00 AM | 1:00 PM | Previous Day |
| 7:00 AM | 2:00 PM | Previous Day |
| 8:00 AM | 3:00 PM | Previous Day |
| 9:00 AM | 4:00 PM | Previous Day |
| 10:00 AM | 5:00 PM | Previous Day |
| 11:00 AM | 6:00 PM | Previous Day |
| 12:00 PM (Noon) | 7:00 PM | Previous Day |
| 1:00 PM | 8:00 PM | Previous Day |
| 2:00 PM | 9:00 PM | Previous Day |
| 3:00 PM | 10:00 PM | Previous Day |
| 4:00 PM | 11:00 PM | Previous Day |
| 5:00 PM | 12:00 AM (Midnight) | Same Day |
| 6:00 PM | 1:00 AM | Same Day |
| 7:00 PM | 2:00 AM | Same Day |
| 8:00 PM | 3:00 AM | Same Day |
| 9:00 PM | 4:00 AM | Same Day |
| 10:00 PM | 5:00 AM | Same Day |
| 11:00 PM | 6:00 AM | Same Day |
How to Convert JST to PST
Method 1: Subtract 17 Hours (During PST Period)
When Pacific Time observes Standard Time (November to March), JST is 17 hours ahead of PST.
Example: 3:00 PM JST → 3:00 PM – 17 hours = 10:00 PM PST (previous day)
Method 2: Subtract 16 Hours (During PDT Period)
When Pacific Time observes Daylight Time (March to November), JST is 16 hours ahead of PDT.
Example: 3:00 PM JST → 3:00 PM – 16 hours = 11:00 PM PDT (previous day)
Method 3: Date Consideration
Before 5:00 PM JST, the PST time falls on the previous calendar day.
December 30, 2025, 2:00 PM JST = December 29, 2025, 9:00 PM PST
December 30, 2025, 7:00 PM JST = December 30, 2025, 2:00 AM PST
December 30, 2025, 7:00 PM JST = December 30, 2025, 2:00 AM PST
Popular Conversion Times
Business Hours
- 9:00 AM JST = 4:00 PM PST (previous day)
- 12:00 PM JST = 7:00 PM PST (previous day)
- 5:00 PM JST = 12:00 AM PST (midnight)
- 6:00 PM JST = 1:00 AM PST
Meeting Times
- Best for JST: 9:00 PM – 11:00 PM
- Converts to PST: 4:00 AM – 6:00 AM
- Early morning PST overlaps with evening JST
- Late evening JST overlaps with morning PST
Stock Market Hours
- Tokyo opens: 9:00 AM JST = 4:00 PM PST
- Tokyo closes: 3:00 PM JST = 10:00 PM PST
- US West opens: 6:30 AM PST = 11:30 PM JST
- US West closes: 1:00 PM PST = 6:00 AM JST (next day)
Travel & Events
- Midnight JST = 7:00 AM PST (previous day)
- Noon JST = 7:00 PM PST (previous day)
- 6:00 AM JST = 1:00 PM PST (previous day)
- 9:00 PM JST = 4:00 AM PST
JST and PST Explained
Japan Standard Time (JST)
UTC Offset: UTC +9:00
Coverage: All of Japan including Tokyo, Osaka, Kyoto, Yokohama, Sapporo, and Okinawa
Daylight Saving: Japan does not observe daylight saving time. JST remains UTC +9 throughout the entire year.
History: Established in 1886 to standardize time across Japan when railway transportation expanded.
Pacific Standard Time (PST)
UTC Offset: UTC -8:00
Coverage: Western United States (California, Washington, Oregon), Western Canada (British Columbia), and parts of Mexico (Baja California)
Major Cities: Los Angeles, San Francisco, Seattle, San Diego, Portland, Vancouver, Las Vegas
Daylight Saving: Switches to PDT (UTC -7) from March to November
Key Difference: The time difference between JST and PST varies between 16 and 17 hours depending on whether Pacific Time is observing Standard Time (PST) or Daylight Time (PDT). Currently, from November 2025 to March 2026, the difference is 17 hours with PST. From March to November, the difference becomes 16 hours with PDT.
Daylight Saving Time Impact
PST vs PDT Transitions
PST Period (Standard Time): First Sunday of November to second Sunday of March
2025-2026 Dates:
- PST began: November 2, 2025, at 2:00 AM (clocks moved back 1 hour)
- PST ends: March 8, 2026, at 2:00 AM (clocks move forward to PDT)
Time Difference Changes:
- During PST (winter): JST is 17 hours ahead
- During PDT (summer): JST is 16 hours ahead
- Japan never changes time, so the difference varies only due to US changes
Related Time Zone Conversions
| From JST (Japan) | To Other Zones | Time Difference |
|---|---|---|
| JST | EST (Eastern Standard Time) | -14 hours |
| JST | CST (Central Standard Time) | -15 hours |
| JST | MST (Mountain Standard Time) | -16 hours |
| JST | PST (Pacific Standard Time) | -17 hours |
| JST | GMT/UTC | -9 hours |
| JST | CET (Central European Time) | -8 hours |
| JST | AEST (Australian Eastern Standard) | +1 hour |
| JST | KST (Korea Standard Time) | Same time |
Frequently Asked Questions
What is the time difference between Japan and PST?
Japan Standard Time (JST) is 17 hours ahead of Pacific Standard Time (PST) during winter months (November to March). When Pacific Daylight Time (PDT) is observed in summer (March to November), the difference reduces to 16 hours. This variation occurs because Japan does not observe daylight saving time while the Pacific zone does.
Does Japan observe daylight saving time?
No, Japan does not observe daylight saving time. JST remains at UTC +9 year-round. Japan used daylight saving only briefly during the US occupation from 1948 to 1951 and has not reintroduced it since. This makes Japan one of the few developed countries that maintains consistent time throughout the year.
If it’s 3:00 PM in Tokyo, what time is it in Los Angeles?
If it’s 3:00 PM (15:00) in Tokyo, it is 10:00 PM (22:00) PST the previous day during winter, or 11:00 PM (23:00) PDT the previous day during summer. The calendar date in Los Angeles is typically one day behind Tokyo for most hours of the day.
What are the best times for meetings between Japan and PST zones?
For video calls and meetings, the best overlap is when it’s 9:00 PM to 11:00 PM in Japan (JST), which corresponds to 4:00 AM to 6:00 AM PST. Alternatively, 6:00 AM to 8:00 AM JST works for those in the PST zone working late (1:00 PM to 3:00 PM PST the previous day). These windows allow both parties to be awake during reasonable hours.
When does PST change to PDT?
PST changes to PDT on the second Sunday of March at 2:00 AM, when clocks spring forward one hour to 3:00 AM PDT. PDT then changes back to PST on the first Sunday of November at 2:00 AM, when clocks fall back to 1:00 AM PST. For 2026, PST will end on March 8 and resume on November 1.
Why is the time difference so large between Japan and PST?
The large time difference of 17 hours (or 16 during PDT) exists because Japan and the US West Coast are nearly on opposite sides of the globe. Japan is far east (UTC +9) while the Pacific coast is far west (UTC -8). This creates a situation where Japan is almost a full day ahead, with the actual difference being 17 hours rather than the 7-hour difference you might expect if counting the other direction around the globe.
Does the entire country of Japan use the same time zone?
Yes, the entire country of Japan uses a single time zone: Japan Standard Time (JST, UTC +9). From Hokkaido in the north to Okinawa in the south, all regions observe the same time. This nationwide standard was established in 1886 to facilitate railway operations across the country.
How do I calculate JST to PST manually?
To convert JST to PST manually, subtract 17 hours from the JST time during winter months (November to March when PST is active). During summer months (March to November when PDT is active), subtract 16 hours. Remember that if the result is negative, you need to go back one calendar day. For example, 2:00 PM JST minus 17 hours equals 9:00 PM PST the previous day.