Time difference: 4 hours
Visualizing the 4-hour Working Day Overlap
| UTC | 🇬🇧 London (UTC+1) | 🇵🇰 Karachi (UTC+5) | Status |
|---|---|---|---|
| 08:00 | 9:00 AM | 1:00 PM | Golden Window |
| 09:00 | 10:00 AM | 2:00 PM | Golden Window |
| 10:00 | 11:00 AM | 3:00 PM | Golden Window |
| 11:00 | 12:00 PM | 4:00 PM | Golden Window |
Try the Interactive Dial Planner
Drag to scrub through 24 hours. Live DST-accurate Temporal API logic.
| UTC | 🇬🇧 London | 🇵🇰 Karachi |
|---|---|---|
| 00:00 | 1:00 AM | 5:00 AM |
| 01:00 | 2:00 AM | 6:00 AM |
| 02:00 | 3:00 AM | 7:00 AM |
| 03:00 | 4:00 AM | 8:00 AM |
| 04:00 | 5:00 AM | 9:00 AM |
| 05:00 | 6:00 AM | 10:00 AM |
| 06:00 | 7:00 AM | 11:00 AM |
| 07:00 | 8:00 AM | 12:00 PM |
| 08:00 | 9:00 AM | 1:00 PM |
| 09:00 | 10:00 AM | 2:00 PM |
| 10:00 | 11:00 AM | 3:00 PM |
| 11:00 | 12:00 PM | 4:00 PM |
| 12:00 | 1:00 PM | 5:00 PM |
| 13:00 | 2:00 PM | 6:00 PM |
| 14:00 | 3:00 PM | 7:00 PM |
| 15:00 | 4:00 PM | 8:00 PM |
| 16:00 | 5:00 PM | 9:00 PM |
| 17:00 | 6:00 PM | 10:00 PM |
| 18:00 | 7:00 PM | 11:00 PM |
| 19:00 | 8:00 PM | 12:00 AM |
| 20:00 | 9:00 PM | 1:00 AM |
| 21:00 | 10:00 PM | 2:00 AM |
| 22:00 | 11:00 PM | 3:00 AM |
| 23:00 | 12:00 AM | 4:00 AM |
What is the best time to schedule a meeting between London and Karachi?
The golden overlap window — when both cities are within standard business hours (9 AM–5 PM local) — runs from 9:00 AM to 1:00 PM in London and 1:00 PM to 5:00 PM in Karachi. That's 4 shared hours. Aim for the centre of the window for best attendance.
What is the time difference between London and Karachi?
London is on UTC+1 and Karachi is on UTC+5, a difference of 4 hours. This can shift by ±1 hour during DST transitions.
When it is 9:00 AM in London, what time is it in Karachi?
When it is 9:00 AM in London (UTC+1), it is 1:00 PM in Karachi (UTC+5).
What are London working hours in Karachi local time?
A standard London workday of 9 AM–5 PM (UTC+1) corresponds to 1:00 PM–9:00 PM local time in Karachi (UTC+5).
Does daylight saving time affect the London–Karachi time difference?
Yes. If either city observes DST, the gap can shift by one hour around clock-change weekends. Always confirm current UTC offsets with a live tool before scheduling important calls.
What UTC time corresponds to the London–Karachi overlap window?
The shared business-hours window runs 8:00 AM–12:00 PM UTC. Booking in UTC avoids DST edge cases and works reliably in all calendar apps.