BST to Karachi
+4hBST
BSTSOURCEKarachi
PKTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and PKT on the World Map
The map below highlights the BST (British Summer Time) and PKT (Pakistan 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.
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).
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.
BST vs Karachi: Offsets, DST and Best Call Times
BST runs on British Summer Time (BST) at UTC+01:00. Karachi runs on Pakistan Standard Time (PKT) at UTC+05:00. That puts BST 4 hours ahead of Karachi — a difference of +4h at the current offsets.
In practice, when it is 9:00 AM in BST it is 1:00 PM in Karachi. Midnight in BST is 4:00 AM in Karachi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BST to Karachi time conversion table
| BST (BST) | Karachi (PKT) | Day |
|---|---|---|
| 12:00 AM | 4:00 AM | same day |
| 6:00 AM | 10:00 AM | same day |
| 7:00 AM | 11:00 AM | same day |
| 8:00 AM | 12:00 PM | same day |
| 9:00 AM | 1:00 PM | same day |
| 12:00 PM | 4:00 PM | same day |
| 3:00 PM | 7:00 PM | same day |
| 5:00 PM | 9:00 PM | same day |
| 6:00 PM | 10:00 PM | same day |
| 9:00 PM | 1:00 AM | next day |
Why people convert BST to Karachi time
- Scheduling a call from BST to Karachi: a 10:00 AM start in BST lands at 2:00 PM in Karachi, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BST and Karachi are inside the 9-to-5 working day between 9:00 AM and 1:00 PM BST time (1:00 PM–5:00 PM PKT). That is roughly 4 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in BST is 12:00 AM in Karachi 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 gap is not.
- Block 9:00 AM–1:00 PM BST as the recurring meeting window if you work primarily from BST and need Karachi 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 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.
Best time to call between BST and Karachi
Both BST and Karachi sit inside the 9 AM – 5 PM working day between 9:00 AM–1:00 PM BST, which is 1:00 PM–5:00 PM PKT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
BST and Karachi overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
BST is 4 hours ahead of Karachi (BST UTC+01:00 → PKT UTC+05:00). The shared working window is 9:00 AM–1:00 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
Karachi
Does not observe DST
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 Karachi?
BST (BST, UTC+01:00) is 4 hours ahead of Karachi (PKT, UTC+05:00). The gap is currently +4h.
How do I convert BST time to Karachi time?
Add +4h to BST local time. For example, 9:00 AM in BST is 1:00 PM in Karachi.
What time is it in Karachi right now?
Karachi uses PKT at UTC+05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from BST.
What is the best time to call Karachi from BST?
Call between 9:00 AM and 1:00 PM BST — that maps to 1:00 PM–5:00 PM PKT and keeps both parties inside the working day.
Which is ahead, BST or Karachi?
BST is 4 hours ahead of Karachi. When it is 12:00 PM in BST it is 4:00 PM in Karachi.
Do BST and Karachi use different time zones?
BST uses BST at UTC+01:00, while Karachi (Pakistan) uses PKT at UTC+05:00. The IANA identifiers are Europe/London and Asia/Karachi.
Does daylight saving time affect the BST–Karachi difference?
Neither zone observes daylight saving time, so the +4h offset between BST and Karachi 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 Karachi?
Not normally. The +4h gap only pushes the date over for late-evening times.
What is the time difference between BST and Karachi?
Karachi is +4h from BST.
What timezone is BST in?
BST operates on its local timezone.
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 are the business hours in Karachi?
Standard business hours in Karachi are 9:00 AM - 5:00 PM PKT.
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 PKT timezone?
Major cities in the PKT timezone include Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar.
What is the UTC offset for PKT?
Pakistan Standard Time (PKT) is at UTC+05:00.
What should I know about the PKT timezone?
Pakistan does not observe daylight saving time. Karachi is one of the world's most populous cities.
When is it midnight in BST, what time is it in Karachi?
When it is 12:00 AM (midnight) in BST (BST), it is +4h later in Karachi (PKT).
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