JST to WET Converter & Meeting Planner
Quick answer: 9:00 AM JST = 12:00 AM WET (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 Western European Time (WET)? You need to account for the standard time difference. Western European Time is normally 9 hours behind Japan Standard Time. Whether you are coordinating between teams in Tokyo and Osaka and Lisbon and Las Palmas, 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 = 3:00 PM WET. The full 24-hour JST to WET table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM JST = 6:00 AM WET.
| JST Time | WET Time |
|---|---|
| 12:00 AM (00:00) | 3:00 PM (15:00)-1 day |
| 1:00 AM (01:00) | 4:00 PM (16:00)-1 day |
| 2:00 AM (02:00) | 5:00 PM (17:00)-1 day |
| 3:00 AM (03:00) | 6:00 PM (18:00)-1 day |
| 4:00 AM (04:00) | 7:00 PM (19:00)-1 day |
| 5:00 AM (05:00) | 8:00 PM (20:00)-1 day |
| 6:00 AM (06:00) | 9:00 PM (21:00)-1 day |
| 7:00 AM (07:00) | 10:00 PM (22:00)-1 day |
| 8:00 AM (08:00) | 11:00 PM (23:00)-1 day |
| 9:00 AM (09:00) | 12:00 AM (00:00) |
| 10:00 AM (10:00) | 1:00 AM (01:00) |
| 11:00 AM (11:00) | 2:00 AM (02:00) |
| 12:00 PM (12:00) | 3:00 AM (03:00) |
| 1:00 PM (13:00) | 4:00 AM (04:00) |
| 2:00 PM (14:00) | 5:00 AM (05:00) |
| 3:00 PM (15:00) | 6:00 AM (06:00) |
| 4:00 PM (16:00) | 7:00 AM (07:00) |
| 5:00 PM (17:00) | 8:00 AM (08:00) |
| 6:00 PM (18:00) | 9:00 AM (09:00) |
| 7:00 PM (19:00) | 10:00 AM (10:00) |
| 8:00 PM (20:00) | 11:00 AM (11:00) |
| 9:00 PM (21:00) | 12:00 PM (12:00) |
| 10:00 PM (22:00) | 1:00 PM (13:00) |
| 11:00 PM (23:00) | 2:00 PM (14:00) |
Best time to call Lisbon from Tokyo
For most work calls, compare the normal business day in Tokyo (JST) with the business day in Lisbon (WET). JST commonly covers East Asia, while WET is mainly associated with Western Europe, Macaronesia.
⚠️ 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 5:00 PM - 6:00 PM JST, which corresponds to 9:00 AM - 10:00 AM WET. This window sits inside the typical JST workday (9:00 AM - 6:00 PM) and the WET workday (9:00 AM - 6:00 PM).
- DST Safety: JST or WET 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 WET?
During standard time, Western European Time is 9 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.
Is WET the same as GMT?
WET and GMT share the exact same UTC+0 standard offset, and both shift forward by one hour during summer under identical DST schedules, making them numerically interchangeable for any clock or calendar calculation. However, WET is the formal legal time zone designation used by Portugal, the Faroe Islands, and Spain's Canary Islands, while GMT is a historically-grounded designation tied specifically to the United Kingdom and its meridian at Greenwich.
Does Spain use Western European Time?
Mainland Spain operates on Central European Time (CET) at UTC+1, meaning cities like Madrid and Barcelona run one hour ahead of WET throughout the entire year. The Canary Islands are the exception: as a Spanish autonomous community, they officially observe WET, placing Las Palmas and Santa Cruz de Tenerife a full hour behind the Spanish mainland at all times.