Budapest is 3.5 hours behind Chennai
Best overlap: 11:30 AM to 6:30 PM in Chennai is 8:00 AM to 3:00 PM in Budapest.
The overlap falls at 11:30 AM to 6:30 PM in Chennai, or 8:00 AM to 3:00 PM if you're in Budapest. With 7 hours in common, treat scheduling almost as if the two cities were in the same region. Because only Budapest changes its clocks, the overlap above isn't fixed; expect a one-hour shift when Budapest enters or leaves daylight saving.