7 PM to 4 AM GMT is the same period as 2 PM to 11 PM EST.
Depending on which Eastern Time you are referring to and whether or not summer time is in effect in London, it could be 8 AM GMT, 9 AM BST, 9 AM GMT, 10 AM BST, 11 PM GMT, 12 AM BST, 12 AM GMT or 1 AM BST.
Eastern Standard Time is earlier than mountain time. Eastern Standard Time is GMT-5, while mountain time is GMT-7.
If it is 2PM in the US, it would be 7PM in Glasgow, Scotland. Glasgow is in the Greenwich Mean Time (GMT) timezone, which is 5 hours ahead of Eastern Standard Time (EST) in certain parts of the US.
9.30 AM Australian Eastern Daylight Saving Time = 10.30 PM GMT 9.30 AM Australian Eastern Standard Time = 11.30 PM GMT 9.30 AM American Eastern Daylight Saving Time = 1.30 PM GMT 9.30 AM American Eastern Standard Time = 2.30 PM GMT
The names are... Pacific Standard Time Mountain Standard Time Central Standard Time Eastern Standard Time Atlantic Standard Time and Newfoundland Standard Time