Best overlap: 4:00 PM to 6:00 PM in Beijing is 8:00 AM to 10:00 AM in Manchester.
Both teams are at their desks between 4:00 PM to 6:00 PM in Beijing and 8:00 AM to 10:00 AM in Manchester. Manchester is 8 hours behind Beijing, which leaves a narrow 2-hour window. Treat 4:00 PM in Beijing (8:00 AM in Manchester) as the time and build around it. One seasonal catch: Manchester springs forward and falls back, but Beijing doesn't, so the gap changes by an hour for several months of the year.
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. -