Best overlap: 8:00 AM to 12:00 PM in Manchester is 2:00 PM to 6:00 PM in Dhaka.
If you set up a recurring sync, 8:00 AM to 12:00 PM in Manchester (2:00 PM to 6:00 PM in Dhaka) is the natural home for it. Dhaka is 6 hours ahead of Manchester, leaving about 4 hours of daily overlap — enough for most meetings if you don't leave them too late in the day. These times hold for most of the year, but Manchester's daylight saving (which Dhaka doesn't use) shifts them by an hour twice annually.
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -