Dallas is typically 11.5 hours behind Mumbai. When it's 9:30 PM in Mumbai, it's 10:00 AM the same day in Dallas. India uses UTC+5:30, creating the half-hour offset. India does not observe daylight saving time, but Dallas does.
During US daylight saving time (March to November), the difference is 10.5 hours. During US standard time (November to March), the difference increases to 11.5 hours.
Optimal meeting window: 7:00 AM - 9:00 AM Dallas time (6:30 PM - 8:30 PM Mumbai, or 7:30 PM - 9:30 PM in winter). Morning Dallas catches evening Mumbai.
Dallas has a thriving Indian-American community and many technology companies in the DFW area work closely with teams in Mumbai and other Indian cities.