Chennai is 4.5 hours ahead of Geneva
Best overlap: 8:30 AM to 1:30 PM in Geneva is 1:00 PM to 6:00 PM in Chennai.
Both offices are open during 8:30 AM to 1:30 PM Geneva time, which is 1:00 PM to 6:00 PM in Chennai. Because Chennai is 4.5 hours ahead of Geneva, the 5-hour overlap is your golden hours — 8:30 AM in Geneva maps to 1:00 PM in Chennai for a dependable slot. Heads up: because Geneva changes its clocks and Chennai doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.