Mumbai is 30 minutes ahead of Karachi. Karachi uses Pakistan Standard Time (PKT, UTC+5) while Mumbai uses Indian Standard Time (IST, UTC+5:30). When it's 12:00 PM in Karachi, it's 12:30 PM in Mumbai.
Neither country observes daylight saving time, so the 30-minute difference remains constant year-round.
Best calling time: 8:30 AM - 4:30 PM Karachi time. This corresponds to 9:00 AM - 5:00 PM in Mumbai, covering Indian business hours.
Karachi and Mumbai are the largest cities in Pakistan and India respectively, with shared history and cultural ties. Both are major port cities and financial centers in South Asia.