Seoul is exactly 3.5 hours ahead of Mumbai year-round. When it's 3:00 PM in Seoul, it's 11:30 AM in Mumbai. India uses UTC+5:30, creating the half-hour offset. Neither city observes daylight saving time.
This time difference remains constant throughout the year since both South Korea and India do not change their clocks for DST.
Excellent business hour overlap! 11:30 AM - 6:00 PM Seoul corresponds to 8:00 AM - 2:30 PM Mumbai. Morning Mumbai catches afternoon Seoul.
Korean pop culture (K-pop, K-dramas) has a massive following in India, and Samsung (headquartered near Seoul) has a huge market presence in India. Trade between Korea and India has been growing rapidly.