BDST to JST
+3hBDST
BDSTSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
BDST and JST on the World Map
The map below highlights the BDST (Bangladesh Standard Time) and JST (Japan Standard Time) timezone regions across the globe.
BDST – Bangladesh Standard Time
UTC+06:00Bangladesh Standard Time (BDST, UTC+06:00) is the time zone for Bangladesh, 6 hours ahead of UTC.
- •Bangladesh uses a single time zone, UTC+06:00, across the entire country.
- •Bangladesh does not observe daylight saving time, so the offset is fixed all year.
- •Dhaka is one of the most densely populated cities globally.
- •BDST is written here to distinguish it from British Summer Time (BST).
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
BDST vs JST: Offsets, DST and Best Call Times
BDST runs on Bangladesh Standard Time (BDST) at UTC+06:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts BDST 3 hours ahead of JST — a difference of +3h at the current offsets.
In practice, when it is 9:00 AM in BDST it is 12:00 PM in JST. Midnight in BDST is 3:00 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BDST to JST time conversion table
| BDST (BDST) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 3:00 AM | same day |
| 6:00 AM | 9:00 AM | same day |
| 7:00 AM | 10:00 AM | same day |
| 8:00 AM | 11:00 AM | same day |
| 9:00 AM | 12:00 PM | same day |
| 12:00 PM | 3:00 PM | same day |
| 3:00 PM | 6:00 PM | same day |
| 5:00 PM | 8:00 PM | same day |
| 6:00 PM | 9:00 PM | same day |
| 9:00 PM | 12:00 AM | next day |
Why people convert BDST to JST time
- Scheduling a call from BDST to JST: a 10:00 AM start in BDST lands at 1:00 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BDST and JST are inside the 9-to-5 working day between 9:00 AM and 2:00 PM BDST time (12:00 PM–5:00 PM JST). That is roughly 5 hours of usable overlap.
- Coordinating a BDST-based team with JST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM BDST" is unambiguous; "3 PM" across a +3h gap is not.
- Block 9:00 AM–2:00 PM BDST as the recurring meeting window if you work primarily from BDST and need JST colleagues present.
About BDST (Bangladesh Standard Time)
Bangladesh Standard Time (BDST) is the single time zone used across Bangladesh, fixed at UTC+06:00 all year. Bangladesh has not observed daylight saving time since a short-lived experiment in 2009, so the gap between Bangladesh and every other zone is constant. Dhaka, the capital, is one of the most densely populated cities in the world. Because the country sits close to the middle of the UTC+06:00 band, solar noon is near 12:00 for most of the year. BDST is listed separately from British Summer Time, which shares the BST abbreviation but is UTC+01:00.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between BDST and JST
Both BDST and JST sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM BDST, which is 12:00 PM–5:00 PM JST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
BDST and JST share 5 hours of working-hours overlap (9:00 AM–2:00 PM BDST), so scheduling a live meeting is straightforward.
BDST is 3 hours ahead of JST (BDST UTC+06:00 → JST UTC+09:00). The shared working window is 9:00 AM–2:00 PM BDST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between BDST and JST?
BDST (BDST, UTC+06:00) is 3 hours ahead of JST (JST, UTC+09:00). The gap is currently +3h.
How do I convert BDST time to JST time?
Add +3h to BDST local time. For example, 9:00 AM in BDST is 12:00 PM in JST.
What time is it in JST right now?
JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from BDST.
What is the best time to call JST from BDST?
Call between 9:00 AM and 2:00 PM BDST — that maps to 12:00 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, BDST or JST?
BDST is 3 hours ahead of JST. When it is 12:00 PM in BDST it is 3:00 PM in JST.
Does daylight saving time affect the BDST–JST difference?
Neither zone observes daylight saving time, so the +3h offset between BDST and JST is fixed all year.
Which other cities share BDST's time zone?
BDST also covers Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.
Which countries use BDST, BDST's zone?
BDST is used in Bangladesh.
Is there a day difference between BDST and JST?
Not normally. The +3h gap only pushes the date over for late-evening times.
What is the time difference between BDST and JST?
JST is +3h from BDST.
What timezone is BDST in?
BDST operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
Which countries use BDST (Bangladesh Standard Time)?
BDST is used in Bangladesh.
Does BDST observe daylight saving time?
No, BDST does not observe daylight saving time and remains at UTC+06:00 year-round.
What are some interesting facts about BDST?
Bangladesh uses a single time zone, UTC+06:00, across the entire country. Bangladesh does not observe daylight saving time, so the offset is fixed all year.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in BDST, what time is it in JST?
When it is 12:00 AM (midnight) in BDST (BDST), it is +3h later in JST (JST).
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See every conversion from BDST →·See every conversion from JST →