JST to PST Converter – Convert Japan Time to Pacific Time

PST is 17 hours behind JST, so to convert mentally, subtract 17 hours to your JST time. For example: 9:00 AM JST = 4:00 PM PST (previous day). Our converter automatically adjusts for Daylight Saving Time so you always get the right result.

PST (Pacific Standard Time, UTC-8) is 17 hours behind JST (Japan Standard Time, UTC+9) during standard time. For example, 9:00 AM JST = 4:00 PM PST (previous day). During DST periods, this difference changes by 1 hour when one or both zones observe Daylight Saving Time — our converter automatically applies the correct offset for any date you select.

JST is 17 hours behind PST, so standard 9–5 business hours do not overlap. The most practical window is late afternoon in JST (5–7 PM), which falls in the morning in PST — for example, 5:00 PM JST = 12:00 AM PST. Use our meeting planner to find the exact time for your date, especially around DST transitions.

Japan does not observe Daylight Saving Time. JST remains constant year-round, which simplifies conversions.

Major cities in the JST (Japan Standard Time, UTC+9) timezone include: Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Fukuoka. JST is a fixed-offset zone — these cities do not observe Daylight Saving Time.

Major cities in the PST (Pacific Standard Time, UTC-8) timezone include: Los Angeles, San Francisco, Seattle, Portland, Las Vegas, Vancouver. These cities switch to PDT (UTC-7) from the second Sunday in March to the first Sunday in November.

PST is 17 hours behind JST. Because JST and PST are 17 hours apart, there is no standard business-hour overlap — plan for one side to take an early morning or late evening call. Always include both local times in calendar invites (for example, "2:00 PM JST / 9:00 PM PST (previous day) PST"). Double-check around March and November (or March/October for European zones) when DST transitions can shift the offset by 1 hour. For full scheduling guidance, see our international meeting times guide.