The short answer

Adachi is 8 hours ahead of Greenwich Mean Time.

Adachi
8:01:45am
JST · UTC+09:00 · Wed, Jun 24
Greenwich Mean Time
12:01:45am
BST · UTC+01:00 · Wed, Jun 24
Read across to convert
Adachi
JST · UTC+09:00
8:01am ☀
Greenwich Mean Time
BST · UTC+01:00
12:01am ☾
Click any row to pin that hour across both zones.
12amWed
4pmTue ·−1d
WORK
1am
5pmTue ·−1d
2am
6pmTue ·−1d
3am
7pmTue ·−1d
4am
8pmTue ·−1d
5am
9pmTue ·−1d
6am
10pmTue ·−1d
7am
11pmTue ·−1d
NOW
8am
12amWed
9am
WORK
1am
10am
WORK
2am
11am
WORK
3am
12pm
WORK
4am
1pm
WORK
5am
2pm
WORK
6am
3pm
WORK
7am
4pm
WORK
8am
5pm
9am
WORK
6pm
10am
WORK
7pm
11am
WORK
8pm
12pm
WORK
9pm
1pm
WORK
10pm
2pm
WORK
11pm
3pm
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Adachi
3pm–7pm
=
Greenwich Mean Time
7am–11am
Popular conversions

Quick reference.

9amAdachi=1amGreenwich Mean Time
12pmAdachi=4amGreenwich Mean Time
3pmAdachi=7amGreenwich Mean Time
5pmAdachi=9amGreenwich Mean Time
9pmAdachi=1pmGreenwich Mean Time
In context

What each side covers.

Adachi
JST · UTC+09:00
8:01am
Cities on this clock
Greenwich Mean Time
BST · UTC+01:00
12:01am
Cities on this clock

Frequently asked

Quick answers about converting between Adachi and Greenwich Mean Time. Can't find what you need? Email [email protected].

What is the time difference between Adachi and Greenwich Mean Time?
Adachi is 8 hours ahead of Greenwich Mean Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 9am in Adachi, what time is it in Greenwich Mean Time?
9am in Adachi is 1am in Greenwich Mean Time. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
What's the best time for a call between Adachi and Greenwich Mean Time?
There's no comfortable 9-to-5 overlap between Adachi and Greenwich Mean Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — JST and BST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.