Hyderabad is 3.5 hours ahead of Brussels
Best overlap: 8:00 AM to 3:00 PM in Brussels is 11:30 AM to 6:30 PM in Hyderabad.
If you set up a recurring sync, 8:00 AM to 3:00 PM in Brussels (11:30 AM to 6:30 PM in Hyderabad) is the natural home for it. With 7 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works. Remember that Brussels shifts for daylight saving and Hyderabad doesn't, so recalculate the overlap after each clock change.