EET to JST
Athens to Tokyo.
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All date & timeQuestions
What time is JST when it is 12:00 EET?
19:00. Japan Standard Time is 7 hours ahead of Eastern European Time in January and 6 hours ahead of it in July. The gap moves because Athens observes daylight saving and Tokyo does not, so the difference between them is not a fixed number. A 9-to-5 day in Athens overlaps a 9-to-5 day in Tokyo for one hour, between 09:00 and 10:00 EET.
Is the difference between EET and JST the same all year?
No, and this is the pair where that matters. Japan Standard Time is 7 hours ahead of Eastern European Time in January and 6 hours ahead of it in July. The gap moves because Athens observes daylight saving and Tokyo does not, so the difference between them is not a fixed number. Booking a recurring call across these two and assuming one number will drift by an hour twice a year — check the date, not just the zones.
What do EET and JST actually stand for?
EET is Eastern European Time, the zone covering Athens, currently UTC+2 in January. JST is Japan Standard Time, covering Tokyo, at UTC+9. Athens, Helsinki, Kyiv and Bucharest run an hour ahead of Paris and Berlin. The whole zone changes clocks on the same instant as the rest of the EU, at 01:00 UTC, so the one-hour gap to Central Europe never breaks.
Anything worth knowing about Japan Standard Time?
Fixed at UTC+9 with no daylight saving — Japan tried it briefly after the war and abandoned it. Korea runs on the same offset, so Tokyo and Seoul clocks always match.
When is a good time to call between Athens and Tokyo?
A 9-to-5 day in Athens overlaps a 9-to-5 day in Tokyo for one hour, between 09:00 and 10:00 EET. If the call has to happen outside that, the fairer arrangement is usually to alternate which side takes the awkward hour rather than always asking the same one.
How it works, and more about eet → jst
The difference, and whether you can rely on it
In January, Japan Standard Time is 7 hours ahead of Eastern European Time — UTC+2 against UTC+9. In July it is 6 hours ahead instead. That is the part worth carrying away: this is not a pair you can memorise a single number for.
Why the gap moves
Athens observes daylight saving; Tokyo does not. So the clocks in one city move twice a year while the other stays put, and the distance between them changes with them. Any calculation you did in one season is wrong in the other. The converter above uses the date you give it rather than today’s offset, which is the only way to get a future meeting right when it falls on the other side of a changeover.
When you can both be at a desk
A standard working day in Athens overlaps one in Tokyo between 09:00 and 10:00 EET — 1 hours. Anything outside that asks somebody to start early or finish late.
Reading the abbreviations literally will mislead you
EET strictly means one fixed offset, but almost nobody uses it that way. People write it to mean the time in Athens, which shifts if that city observes daylight saving — and it does. This page follows the common usage rather than the strict one, because the strict reading gives an answer that is wrong for a good part of the year.
Athens, Helsinki, Kyiv and Bucharest run an hour ahead of Paris and Berlin. The whole zone changes clocks on the same instant as the rest of the EU, at 01:00 UTC, so the one-hour gap to Central Europe never breaks. Fixed at UTC+9 with no daylight saving — Japan tried it briefly after the war and abandoned it. Korea runs on the same offset, so Tokyo and Seoul clocks always match.
Scheduling something recurring
For a one-off, the converter above is the whole job. For a standing meeting across these two zones, where the gap changes, it is worth putting the invitation in a calendar that stores the zone rather than the time — then the changeover is handled for you and nobody has to remember. If you are trying to find a slot across more than two places at once, the meeting planner shows a whole day at a glance instead.