JST to WEST: JST is 8 hours ahead of WEST

Japan Standard Time is 8 hours ahead of Western European Time right now. It is 12:46 pm JST in Japan and 4:46 am WEST in Lisbon.

Convert a specific time from JST to WEST

Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.

What is the time difference between JST and WEST?

Western European Time is 8 hours behind Japan Standard Time. To go from JST to WEST you subtract 8 hours. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 8 hours to 9 hours, because Lisbon moves its clocks and Japan does not. This page recomputes it rather than assuming.

JST to WEST conversion table

Every hour of Sunday, September 27, 2026 in Japan, with the matching reading in Lisbon. 8 of the 24 hours land on a different calendar date in Lisbon, which is the part people get wrong when they schedule across this pair.

What are the best hours to schedule a call between JST and WEST?

No hour of the standard 9:00 am to 5:00 pm working day falls inside working hours on both sides. Japan and Lisbon are 8 hours apart, which is too far for an overlap, so somebody has to take a call outside their own working day. The least painful options are below, ranked by how close both sides sit to the middle of the afternoon.

Does daylight saving change JST to WEST?

Japan Standard Time does not move its clocks at all, so its UTC+9 offset holds every day of the year.

Western European Time is currently on WEST and changes next on Sunday, October 25, 2026, when the clock falls back from 1:59 am to 1:00 am and the offset moves from UTC+1 to UTC+0.

Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 8 hours and for the rest it is 9 hours. The table above is built for today, not for an average day.

Is JST ahead of or behind WEST?

JST is ahead of WEST by 8 hours: when it is 12:00 pm in Japan, it is 4:00 am in Lisbon. One wrinkle worth knowing: WET and WEST are two names for the same zone, not two zones. Western European Time reads WET in winter and WEST in summer. When somebody types "jst to wet" they nearly always mean the zone rather than the literal winter offset, so this page resolves JST to Asia/Tokyo and WET to Europe/Lisbon and applies whichever offset is genuinely in force on the day.

Japan Standard Time covers Tokyo, Osaka and the whole of Japan. Western European Time covers Lisbon, Porto and the Canary Islands, one hour behind most of the continent. The identifiers behind them are Asia/Tokyo and Europe/Lisbon, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.

Questions

What is JST in WEST?

JST is 8 hours ahead of WEST. 9:00 am JST is 1:00 am WEST.

How many hours ahead is WEST of JST?

WEST is 8 hours behind JST. That varies across the year, between 8 hours and 9 hours.

What time is it in Lisbon right now?

4:46 am WEST on Sunday, September 27, 2026.

When can Japan and Lisbon meet during working hours?

There is no shared working hour. The closest fit is 3:00 pm JST, which is 7:00 am WEST.

Does this account for daylight saving?

Yes. Every reading is computed from the IANA database for the actual date, so JST and WEST are the abbreviations genuinely in force today rather than a fixed assumption.

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