11.00 Am. Gmt ( utc ) : (cleaner looking) * 11am (more often encountered in british writing) * 11 am (avoids the problem of “am” as in ‘i am’) *.

I guess for most people the left column makes more sense: See, what time is 11:00 am utc (coordinated universal time) in your local time. When it is 11:00 am in pt, it would be a suitable time to arrange a call or meeting.