KST to BDST
-3hKST
KSTSOURCEBDST
BDSTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and BDST on the World Map
The map below highlights the KST (Korea Standard Time) and BDST (Bangladesh Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
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).
KST to BDST Time Difference – Complete Guide
KST runs on Korea Standard Time (KST) at UTC+09:00. BDST runs on Bangladesh Standard Time (BDST) at UTC+06:00. That puts KST 3 hours behind BDST — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in KST it is 6:00 AM in BDST. Midnight in KST is 9:00 PM in BDST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to BDST time conversion table
| KST (KST) | BDST (BDST) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert KST to BDST time
- Scheduling a call from KST to BDST: a 10:00 AM start in KST lands at 7:00 AM in BDST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and BDST are inside the 9-to-5 working day between 12:00 PM and 5:00 PM KST time (9:00 AM–2:00 PM BDST). That is roughly 5 hours of usable overlap.
- Watching a live event or market open: KST viewers need 6:00 AM in BDST to catch a 9:00 AM start there, and 3:00 AM if the event is anchored to KST.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM KST as the recurring meeting window if you work primarily from KST and need BDST colleagues present.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
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.
Best time to call between KST and BDST
Both KST and BDST sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM KST, which is 9:00 AM–2:00 PM BDST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
KST and BDST share 5 hours of working-hours overlap (12:00 PM–5:00 PM KST), so scheduling a live meeting is straightforward.
KST is 3 hours behind BDST (KST UTC+09:00 → BDST UTC+06:00). The shared working window is 12:00 PM–5:00 PM KST. 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 KST and BDST?
KST (KST, UTC+09:00) is 3 hours behind BDST (BDST, UTC+06:00). The gap is currently -3h.
How do I convert KST time to BDST time?
Add -3h to KST local time. For example, 9:00 AM in KST is 6:00 AM in BDST.
What time is it in BDST right now?
BDST uses BDST at UTC+06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h offset from KST.
What is the best time to call BDST from KST?
Call between 12:00 PM and 5:00 PM KST — that maps to 9:00 AM–2:00 PM BDST and keeps both parties inside the working day.
Which is behind, KST or BDST?
KST is 3 hours behind BDST. When it is 12:00 PM in KST it is 9:00 AM in BDST.
Does daylight saving time affect the KST–BDST difference?
Neither zone observes daylight saving time, so the -3h offset between KST and BDST is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and BDST?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between KST and BDST?
BDST is -3h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is BDST in?
BDST operates on its local timezone.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the BDST timezone?
Major cities in the BDST timezone include Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.
What is the UTC offset for BDST?
Bangladesh Standard Time (BDST) is at UTC+06:00.
What should I know about the BDST timezone?
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.
When is it midnight in KST, what time is it in BDST?
When it is 12:00 AM (midnight) in KST (KST), it is -3h later in BDST (BDST).
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