Shenzhen is 2.5 hours ahead of Hyderabad
Best overlap: 8:00 AM to 4:00 PM in Hyderabad is 10:30 AM to 6:30 PM in Shenzhen.
For the smoothest call, aim inside 8:00 AM to 4:00 PM in Hyderabad, i.e. 10:30 AM to 6:30 PM in Shenzhen. Shenzhen is 2.5 hours ahead of Hyderabad, but with 8 hours of common ground you can hold morning or afternoon meetings without anyone working odd hours.