Convert Japan Standard Time to Pacific Standard Time (JST to PST)

Understanding JST and PST Time Zones

Japan Standard Time (JST)

Japan Standard Time is observed in undefined and uses the offset UTC+9. Major cities in this time zone include Tokyo, Osaka, Yokohama. This time zone serves a significant global region with important economic and cultural hubs.

Pacific Standard Time (PST)

Pacific Standard Time operates at UTC-8, covering undefined. Key cities include Los Angeles, San Francisco, Seattle, Portland. The 17-hour backward offset from JST means that when professionals in Tokyo start their workday at 9:00 AM, it is already 4:00 PM in Los Angeles.

JST is also commonly referred to as Japan time, Tokyo time, Japanese time. PST is also known as Pacific Time, PT, West Coast time, LA time, California time. So if you are searching for Japan time to Pacific Time, this is the same conversion as JST to PST.

Complete JST to PST Conversion Table

The table below shows every two-hour increment converted from Japan Standard Time to Pacific Standard Time. Business hours (9 AM – 5 PM) are highlighted for easy scheduling reference.

Times shown in 12-hour and 24-hour format. Last updated 2026-03-09.

Scheduling Between JST and PST

When coordinating deliverables across JST and PST, set deadlines in the earlier time zone to avoid end-of-day confusion. A "5 PM deadline" should specify which zone to prevent missed deliveries due to the 17-hour offset.

The large 17-hour gap between JST and PST means that finding overlapping working hours requires compromise from at least one side. Consider adopting asynchronous workflows — recorded video updates, shared documents, and time-zone-aware project management tools — to supplement the limited real-time overlap.

Travel Between Tokyo and Los Angeles

Flight times between Tokyo and Los Angeles often appear misleading because of the time zone shift. A departure at 10:00 AM JST arriving at 3:00 PM PST may look long, but remember to factor in the 17-hour offset.

Medical experts recommend allowing approximately one day of adjustment per hour of time difference. For the 17-hour shift between JST and PST, plan for roughly one week of gradual adjustment for optimal performance.

Daylight Saving Time Considerations

Countries near the equator — including Singapore, most of Africa, and parts of South America — do not observe DST, making their offsets constant year-round. This simplifies scheduling compared to US or European zones.

For the JST to PST conversion specifically: JST (UTC+9) does not observe DST, while PST (UTC-8) does observe DST. This means the offset between them changes by one hour seasonally — the usual 17-hour gap becomes 16 or 18 hours during DST transitions.

Related Time Zone Conversions

References & Resources

• TimeAndDate.com — World Time Zones
• NIST — Official US Time Standard
• IANA Time Zone Database
• Wikipedia — Time Zone Abbreviations
• WorldTimeServer — Current Times Worldwide
• NICT — Official Japanese Time

Frequently Asked Questions