Time difference between Tehran, Iran and GMT is -4:30 hours
Tehran is 4 hours, 30 minutes ahead of GMT. When it is 9:00 am in GMT, it is 1:30 pm in Tehran. See time converter
GMT - Greenwich Mean Time
Time zone offset: UTC/GMT
Please note that currently BST (British Summer Time) is observed in the United Kingdom and IST (Irish Summer Time) is observed in Ireland inplace of GMT.
DST started on 31 March 2019
DST will end on 27 October 2019