How do I convert BST to IST? Read less IST is 4h30 ahead of BST (UTC+1, UK summer). India uses IST year-round with no DST.
What is the time difference between BST and IST? Read less The time difference between British Summer Time (BST) and Indian Standard Time (IST) is 4 hours and 30 minutes. IST is ahead of BST.
What is BST? Read less British Summer Time (BST) is the daylight saving time used in the United Kingdom, which is UTC+1. It is observed from late March to late October.