Perth to BST
-7hPerth
AWSTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
AWST and BST on the World Map
The map below highlights the AWST (Australian Western Standard Time) and BST (British Summer Time) timezone regions across the globe.
AWST – Australian Western Standard Time
UTC+08:00Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.
- •Western Australia does not observe daylight saving time.
- •Perth is the most isolated major city in the world.
- •AWST is the same offset as China Standard Time and Singapore Time.
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.
About Perth
WikipediaPerth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.
Western Australia does not observe daylight saving time.
Understanding the -7h Gap: Perth vs BST
Perth runs on Australian Western Standard Time (AWST) at UTC+08:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts Perth 7 hours behind BST — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in Perth it is 2:00 AM in BST. Midnight in Perth is 5:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Perth to BST time conversion table
| Perth (AWST) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert Perth to BST time
- Scheduling a call from Perth to BST: a 10:00 AM start in Perth lands at 3:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Perth and BST are inside the 9-to-5 working day between 4:00 PM and 5:00 PM AWST time (9:00 AM–10:00 AM BST). That is roughly 1 hours of usable overlap.
- Watching a live event or market open: Perth viewers need 2:00 AM in BST to catch a 9:00 AM start there, and 7:00 AM if the event is anchored to Perth.
- Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM AWST as the recurring meeting window if you work primarily from Perth and need BST colleagues present.
About AWST (Australian Western Standard Time)
Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city in the world.
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.
Best time to call between Perth and BST
Both Perth and BST sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM AWST, which is 9:00 AM–10:00 AM BST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Perth and BST overlap for only 60 minutes (4:00 PM–5:00 PM AWST), so meetings have to be booked precisely.
Perth is 7 hours behind BST (AWST UTC+08:00 → BST UTC+01:00). The shared working window is 4:00 PM–5:00 PM AWST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Perth
Does not observe DST
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 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 Perth and BST?
Perth (AWST, UTC+08:00) is 7 hours behind BST (BST, UTC+01:00). The gap is currently -7h.
How do I convert Perth time to BST time?
Add -7h to Perth local time. For example, 9:00 AM in Perth is 2:00 AM in BST.
What time is it in BST right now?
BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from Perth.
What is the best time to call BST from Perth?
Call between 4:00 PM and 5:00 PM AWST — that maps to 9:00 AM–10:00 AM BST and keeps both parties inside the working day.
Which is behind, Perth or BST?
Perth is 7 hours behind BST. When it is 12:00 PM in Perth it is 5:00 AM in BST.
Do Perth and BST use different time zones?
Perth (Australia) uses AWST at UTC+08:00, while BST uses BST at UTC+01:00. The IANA identifiers are Australia/Perth and Europe/London.
Does daylight saving time affect the Perth–BST difference?
Neither zone observes daylight saving time, so the -7h offset between Perth and BST is fixed all year.
Which other cities share Perth's time zone?
AWST also covers Perth, Mandurah, Bunbury, Geraldton.
Which countries use AWST, Perth's zone?
AWST is used in Australia (Western Australia).
Is there a day difference between Perth and BST?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between Perth and BST?
BST is -7h from Perth.
What timezone is Perth in?
Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.
What timezone is BST in?
BST operates on its local timezone.
What are the business hours in Perth?
Standard business hours in Perth are 9:00 AM - 5:00 PM AWST.
Which countries use AWST (Australian Western Standard Time)?
AWST is used in Australia (Western Australia).
Does AWST observe daylight saving time?
No, AWST does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about AWST?
Western Australia does not observe daylight saving time. Perth is the most isolated major city in the world.
Which cities are in the BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
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.
When is it midnight in Perth, what time is it in BST?
When it is 12:00 AM (midnight) in Perth (AWST), it is -7h later in BST (BST).
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