how many hours is 7:30 to 3:30
I presume you mean 7:30 a.m. to 3:30 p.m in the same day; the answer is 8.MT is 5 hours ahead of EST, so it would be 8:30.   If you are asking about 3:30 AM EST, it woul dbe 8:30 AM GMT; if  you are asking about 3:30 PM EST, so 15:30 EST, it w â¦ ould be 8:30 PM  GMT, so 20:30 GMT. 2 people found this useful.