BST to NST
-4h 30mBST
BSTSOURCENST
NSTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and NST on the World Map
The map below highlights the BST (British Summer Time) and NST (Newfoundland Standard Time) timezone regions across the globe.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
NST – Newfoundland Standard Time
UTC-03:30Newfoundland Standard Time (NST) is a unique half-hour offset time zone in Canada, 3.5 hours behind UTC.
- •NST is one of only a few half-hour offset time zones in the world.
- •Newfoundland joined Canada in 1949 and kept its unique time zone.
- •St. John's is the easternmost city in North America.
BST vs NST: Offsets, DST and Best Call Times
BST runs on British Summer Time (BST) at UTC+01:00. NST runs on Newfoundland Standard Time (NST) at UTC-03:30. That puts BST 4 hours 30 minutes behind NST — a difference of -4h 30m at the current offsets.
In practice, when it is 9:00 AM in BST it is 4:30 AM in NST. Midnight in BST is 7:30 PM in NST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BST to NST time conversion table
| BST (BST) | NST (NST) | Day |
|---|---|---|
| 12:00 AM | 7:30 PM | previous day |
| 6:00 AM | 1:30 AM | same day |
| 7:00 AM | 2:30 AM | same day |
| 8:00 AM | 3:30 AM | same day |
| 9:00 AM | 4:30 AM | same day |
| 12:00 PM | 7:30 AM | same day |
| 3:00 PM | 10:30 AM | same day |
| 5:00 PM | 12:30 PM | same day |
| 6:00 PM | 1:30 PM | same day |
| 9:00 PM | 4:30 PM | same day |
Why people convert BST to NST time
- Scheduling a call from BST to NST: a 10:00 AM start in BST lands at 5:30 AM in NST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BST and NST are inside the 9-to-5 working day between 1:30 PM and 5:00 PM BST time (9:00 AM–12:30 PM NST). That is roughly 3 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in BST is 3:30 PM in NST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -4h 30m gap is not.
- Block 1:30 PM–5:00 PM BST as the recurring meeting window if you work primarily from BST and need NST colleagues present.
About BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
About NST (Newfoundland Standard Time)
Newfoundland Standard Time (NST) is one of the few half-hour offset time zones in the world. It covers the island of Newfoundland in Canada and is 30 minutes ahead of Atlantic Standard Time. This unique offset exists because Newfoundland was an independent country until 1949.
Best time to call between BST and NST
Both BST and NST sit inside the 9 AM – 5 PM working day between 1:30 PM–5:00 PM BST, which is 9:00 AM–12:30 PM NST. That gives roughly 3 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
BST and NST overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
BST is 4 hours 30 minutes behind NST (BST UTC+01:00 → NST UTC-03:30). The shared working window is 1:30 PM–5:00 PM BST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
NST
☀ Currently in DST
Standard: UTC-03:30 · DST: UTC-02:30
Clocks fall back on Sun, Nov 1, 2026
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 BST and NST?
BST (BST, UTC+01:00) is 4 hours 30 minutes behind NST (NST, UTC-03:30). The gap is currently -4h 30m.
How do I convert BST time to NST time?
Add -4h 30m to BST local time. For example, 9:00 AM in BST is 4:30 AM in NST.
What time is it in NST right now?
NST uses NST at UTC-03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h 30m offset from BST.
What is the best time to call NST from BST?
Call between 1:30 PM and 5:00 PM BST — that maps to 9:00 AM–12:30 PM NST and keeps both parties inside the working day.
Which is behind, BST or NST?
BST is 4 hours 30 minutes behind NST. When it is 12:00 PM in BST it is 7:30 AM in NST.
Does daylight saving time affect the BST–NST difference?
Neither zone observes daylight saving time, so the -4h 30m offset between BST and NST is fixed all year.
Which other cities share BST's time zone?
BST also covers London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool and 2 more.
Which countries use BST, BST's zone?
BST is used in United Kingdom.
Is there a day difference between BST and NST?
Not normally. The -4h 30m gap only pushes the date over the previous day.
What is the time difference between BST and NST?
NST is -4h 30m from BST.
What timezone is BST in?
BST operates on its local timezone.
What timezone is NST in?
NST operates on its local timezone.
Which countries use BST (British Summer Time)?
BST is used in United Kingdom.
Does BST observe daylight saving time?
Yes, BST switches to BST during summer months.
What are some interesting facts about BST?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
Which cities are in the NST timezone?
Major cities in the NST timezone include St. John's, Corner Brook, Mount Pearl.
What is the UTC offset for NST?
Newfoundland Standard Time (NST) is at UTC-03:30. During daylight saving time, it shifts to NDT.
What should I know about the NST timezone?
NST is one of only a few half-hour offset time zones in the world. Newfoundland joined Canada in 1949 and kept its unique time zone.
When is it midnight in BST, what time is it in NST?
When it is 12:00 AM (midnight) in BST (BST), it is -4h 30m later in NST (NST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More BST time conversions
- bst to london
- bst to gmt
- bst to uk
- bst to new york
- bst to dubai
- bst to tokyo
- bst to singapore
- bst to sydney
- bst to los angeles
- bst to paris
- bst to delhi
- bst to mumbai
- bst to berlin
- bst to hong kong
- bst to toronto
- bst to kathmandu
- new york to bst
- london to bst
- dubai to bst
- tokyo to bst
- singapore to bst
- sydney to bst
- los angeles to bst
- paris to bst
- delhi to bst
- mumbai to bst
- berlin to bst
- hong kong to bst
- toronto to bst
- kathmandu to bst
See every conversion from BST →·See every conversion from NST →