Karachi is currently 4 hours ahead of London. Convert time between Karachi and London, see the exact difference, and find the best hours for calls and meetings.
Karachi uses Pakistan Standard Time. London uses British Summer Time. Karachi time is 4 hours ahead of London. So, when it is 12:00 AM in Karachi, it is 8:00 PM in London.
Common Karachi times and their London equivalents.
| Karachi Time | London Time |
|---|---|
| 12:00 AM Karachi | 8:00 PM London |
| 1:00 AM Karachi | 9:00 PM London |
| 2:00 AM Karachi | 10:00 PM London |
| 3:00 AM Karachi | 11:00 PM London |
| 4:00 AM Karachi | 12:00 AM London |
| 5:00 AM Karachi | 1:00 AM London |
| 6:00 AM Karachi | 2:00 AM London |
| 7:00 AM Karachi | 3:00 AM London |
| 8:00 AM Karachi | 4:00 AM London |
| 9:00 AM Karachi | 5:00 AM London |
| 10:00 AM Karachi | 6:00 AM London |
| 11:00 AM Karachi | 7:00 AM London |
| 12:00 PM Karachi | 8:00 AM London |
| 1:00 PM Karachi | 9:00 AM London |
| 2:00 PM Karachi | 10:00 AM London |
| 3:00 PM Karachi | 11:00 AM London |
| 4:00 PM Karachi | 12:00 PM London |
| 5:00 PM Karachi | 1:00 PM London |
| 6:00 PM Karachi | 2:00 PM London |
| 7:00 PM Karachi | 3:00 PM London |
| 8:00 PM Karachi | 4:00 PM London |
| 9:00 PM Karachi | 5:00 PM London |
| 10:00 PM Karachi | 6:00 PM London |
| 11:00 PM Karachi | 7:00 PM London |
Karachi uses Pakistan Standard Time (PKT, UTC+5) year-round. Pakistan does not currently observe Daylight Saving Time (it was briefly reintroduced in 2008 but discontinued). The fixed UTC+5 places Karachi and Lahore thirty minutes behind IST and one hour ahead of Dubai.
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
Both Karachi and London may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Karachi | London | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT+5 (UTC+5) | GMT (UTC+0) | 5 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT+5 (UTC+5) | GMT (UTC+0) | 5 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+5 (UTC+5) | GMT+1 (UTC+1) | 4 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT+5 (UTC+5) | GMT (UTC+0) | 5 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Karachi is currently 4 hours ahead of London. Karachi uses Pakistan Standard Time (UTC+5) and London uses British Summer Time (UTC+1).
The best overlap window is 1:00 pm–6:00 pm Karachi time, which corresponds to 9:00 am–2:00 pm London time. Both cities are within standard business hours (9 am–6 pm) during this window.
When it is 9:00 AM in Karachi, it is 5:00 am in London. Karachi is 4 hours ahead of London.
When it is 5:00 PM in London, it is 9:00 pm in Karachi.
London observes Daylight Saving Time but Karachi does not. This means the offset between the two cities changes by one hour when London transitions its clocks. Always verify the current offset when scheduling meetings near DST transition dates.