Hong Kong is 7 hours ahead of Prague
Best overlap: 8:00 AM to 11:00 AM in Prague is 3:00 PM to 6:00 PM in Hong Kong.
The overlap falls at 8:00 AM to 11:00 AM in Prague, or 3:00 PM to 6:00 PM if you're in Hong Kong. You get roughly 3 hours of shared time, so aim for the middle of that window to keep the call comfortable for both teams. Heads up: because Prague changes its clocks and Hong Kong doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.