Sydney is 4.5 hours ahead of Bangalore (AEST), and 5.5 hours ahead during AEDT. Bangalore uses Indian Standard Time (IST, UTC+5:30) while Sydney uses Australian Eastern Time. India doesn't observe DST but Sydney does.
When it's 12:00 PM in Bangalore, it's 4:30 PM (winter) or 5:30 PM (summer) in Sydney.
Good overlap during business hours! 9:00 AM - 1:00 PM in Bangalore corresponds to 1:30 PM - 5:30 PM in Sydney (AEST), providing several hours of overlap.
Bangalore and Sydney have growing tech industry connections. Many Australian companies have development teams in Bangalore, and the relatively small time difference makes collaboration easier than US-India.