There is no time difference between Bangalore and Chennai. Both cities use India Standard Time (IST, UTC+5:30). When it's 12:00 PM in Bangalore, it's also 12:00 PM in Chennai.
India uses a single timezone across the entire country, so all major Indian cities are synchronized.
Any time works! Since both cities share the same timezone, you can schedule calls during standard business hours (9:00 AM - 6:00 PM) without any time conversion needed.
Bangalore and Chennai are neighboring South Indian cities, both major IT and technology hubs. Bangalore is India's "Silicon Valley" while Chennai is a major automotive and manufacturing center. They are about 350 km apart with frequent flights and trains connecting them.