Hyderabad is 9.5 hours ahead of Washington, D.C.
Best overlap: 8:00 AM to 9:00 AM in Washington, D.C. is 5:30 PM to 6:30 PM in Hyderabad.
Washington, D.C. and Hyderabad overlap from 8:00 AM to 9:00 AM (Washington, D.C.) to the equivalent 5:30 PM to 6:30 PM in Hyderabad — that's your meeting window. The shared window is only 1 hour — treat 8:00 AM in Washington, D.C. (5:30 PM in Hyderabad) as the one fixed point and plan everything else around it. The difference isn't constant year-round: Washington, D.C. adjusts for daylight saving while Hyderabad holds steady.