Karachi to BST
-4hKarachi
PKTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
PKT and BST on the World Map
The map below highlights the PKT (Pakistan Standard Time) and BST (British Summer Time) timezone regions across the globe.
PKT – Pakistan Standard Time
UTC+05:00Pakistan Standard Time (PKT) is the time zone for Pakistan, 5 hours ahead of UTC.
- •Pakistan does not observe daylight saving time.
- •Karachi is one of the world's most populous cities.
- •PKT is the same offset as Uzbekistan (UZT) and Yekaterinburg (YEKT).
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 Karachi
WikipediaKarachi operates on Pakistan Standard Time (PKT), UTC+5. As Pakistan's financial hub and largest port city, Karachi time drives South Asian commerce.
Karachi is one of the fastest-growing megacities in the world.
Karachi vs BST: Offsets, DST and Best Call Times
Karachi runs on Pakistan Standard Time (PKT) at UTC+05:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts Karachi 4 hours behind BST — a difference of -4h at the current offsets.
In practice, when it is 9:00 AM in Karachi it is 5:00 AM in BST. Midnight in Karachi is 8:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Karachi to BST time conversion table
| Karachi (PKT) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 8:00 PM | previous day |
| 6:00 AM | 2:00 AM | same day |
| 7:00 AM | 3:00 AM | same day |
| 8:00 AM | 4:00 AM | same day |
| 9:00 AM | 5:00 AM | same day |
| 12:00 PM | 8:00 AM | same day |
| 3:00 PM | 11:00 AM | same day |
| 5:00 PM | 1:00 PM | same day |
| 6:00 PM | 2:00 PM | same day |
| 9:00 PM | 5:00 PM | same day |
Why people convert Karachi to BST time
- Scheduling a call from Karachi to BST: a 10:00 AM start in Karachi lands at 6:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Karachi and BST are inside the 9-to-5 working day between 1:00 PM and 5:00 PM PKT time (9:00 AM–1:00 PM BST). That is roughly 4 hours of usable overlap.
- Coordinating a Karachi-based team with BST 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 PKT" is unambiguous; "3 PM" across a -4h gap is not.
- Block 1:00 PM–5:00 PM PKT as the recurring meeting window if you work primarily from Karachi and need BST colleagues present.
About PKT (Pakistan Standard Time)
Pakistan Standard Time (PKT) is the time zone used throughout Pakistan. PKT does not observe daylight saving time. Pakistan is the 5th most populous country 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 Karachi and BST
Both Karachi and BST sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM PKT, which is 9:00 AM–1:00 PM BST. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Karachi and BST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Karachi is 4 hours behind BST (PKT UTC+05:00 → BST UTC+01:00). The shared working window is 1:00 PM–5:00 PM PKT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Karachi
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 Karachi and BST?
Karachi (PKT, UTC+05:00) is 4 hours behind BST (BST, UTC+01:00). The gap is currently -4h.
How do I convert Karachi time to BST time?
Add -4h to Karachi local time. For example, 9:00 AM in Karachi is 5:00 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 -4h offset from Karachi.
What is the best time to call BST from Karachi?
Call between 1:00 PM and 5:00 PM PKT — that maps to 9:00 AM–1:00 PM BST and keeps both parties inside the working day.
Which is behind, Karachi or BST?
Karachi is 4 hours behind BST. When it is 12:00 PM in Karachi it is 8:00 AM in BST.
Do Karachi and BST use different time zones?
Karachi (Pakistan) uses PKT at UTC+05:00, while BST uses BST at UTC+01:00. The IANA identifiers are Asia/Karachi and Europe/London.
Does daylight saving time affect the Karachi–BST difference?
Neither zone observes daylight saving time, so the -4h offset between Karachi and BST is fixed all year.
Which other cities share Karachi's time zone?
PKT also covers Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar.
Which countries use PKT, Karachi's zone?
PKT is used in Pakistan.
Is there a day difference between Karachi and BST?
Not normally. The -4h gap only pushes the date over the previous day.
What is the time difference between Karachi and BST?
BST is -4h from Karachi.
What timezone is Karachi in?
Karachi operates on Pakistan Standard Time (PKT), UTC+5. As Pakistan's financial hub and largest port city, Karachi time drives South Asian commerce.
What timezone is BST in?
BST operates on its local timezone.
What are the business hours in Karachi?
Standard business hours in Karachi are 9:00 AM - 5:00 PM PKT.
Which countries use PKT (Pakistan Standard Time)?
PKT is used in Pakistan.
Does PKT observe daylight saving time?
No, PKT does not observe daylight saving time and remains at UTC+05:00 year-round.
What are some interesting facts about PKT?
Pakistan does not observe daylight saving time. Karachi is one of the world's most populous cities.
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 Karachi, what time is it in BST?
When it is 12:00 AM (midnight) in Karachi (PKT), it is -4h later in BST (BST).
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