EST or Eastern Time is -5 GMT so 20:15 ( 8:15 pm ) would be 15:15 or 3:15 Pm but because of daylight savings it would be shifted to 4:15 pm or 16:15 for more on the GMT time zone check out this site wwp.greenwichmeantime.com
What Is 8:15 Pm Eastern Time In GMT?
