Clockjumper

Timezone conversion

JST to BST Time — Convert Japan Standard Time to British Summer Time

BST is currently 8 hours behind JST. The gap shifts across the year: around January it is 9 hours behind JST, and around July it is 8 hours behind JST, because one or both zones observe daylight saving.

BST is currently 8 hours behind JST.

JST • GMT+9 (UTC+9)
2:16 AM
Thursday, Jul 9
BST • BST (UTC+1)
6:16 PM
Wednesday, Jul 8

Abbreviation disambiguation

BST here means British Summer Time. Note: collision: Bangladesh Standard Time (Asia/Dhaka)

Interactive converter

12:00PM

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Full JST to BST conversion table

JSTBST
12:00 AM4:00 PM(previous day)
1:00 AM5:00 PM(previous day)
2:00 AM6:00 PM(previous day)
3:00 AM7:00 PM(previous day)
4:00 AM8:00 PM(previous day)
5:00 AM9:00 PM(previous day)
6:00 AM10:00 PM(previous day)
7:00 AM11:00 PM(previous day)
8:00 AM12:00 AM
9:00 AM1:00 AM
10:00 AM2:00 AM
11:00 AM3:00 AM
12:00 PM4:00 AM
1:00 PM5:00 AM
2:00 PM6:00 AM
3:00 PM7:00 AM
4:00 PM8:00 AM
5:00 PM9:00 AM
6:00 PM10:00 AM
7:00 PM11:00 AM
8:00 PM12:00 PM
9:00 PM1:00 PM
10:00 PM2:00 PM
11:00 PM3:00 PM

Daylight saving and how the gap changes

Around January the JST → BST offset is 9 hours behind JST. Around July it is 8 hours behind JST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is BST ahead of or behind JST right now?
BST is currently 8 hours behind JST.
What is the current JST to BST time difference?
Right now the gap is 8 hours behind — BST is 8 hours behind JST.
Does the JST → BST offset change during the year?
Yes. Around January the offset is 9 hours behind JST; around July it is 8 hours behind JST. The converter above always reflects the correct offset for the date you pick.
Does JST observe daylight saving time?
No — Japan Standard Time stays at a fixed UTC offset year-round.
Does BST observe daylight saving time?
Yes — British Summer Time observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
What time is 9 AM JST in BST?
9:00 AM JST is 1:00 AM BST.
What time is 12 PM (noon) JST in BST?
12:00 PM JST is 4:00 AM BST.
What time is 5 PM JST in BST?
5:00 PM JST is 9:00 AM BST.
When is the best time to schedule a call between JST and BST?
JST and BST have no direct 09:00–17:00 overlap on the same calendar day. Consider early-morning or late-evening slots on one side, or an asynchronous handoff.
What time zone does JST refer to?
JST refers to Japan Standard Time (IANA: Asia/Tokyo).
What time zone does BST refer to?
BST refers to British Summer Time (IANA: Europe/London).
Is BST on this page the same as other zones that share the letters "BST"?
On Clockjumper, BST means British Summer Time. Disambiguation: collision: Bangladesh Standard Time (Asia/Dhaka)

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