I feel obligated to say that time zones are a pain in the ass, but yes that's definitely possible.
You can use $gmt identifier and then add/take hours from it as you please. As an example I live in Finland, and currently our offset is UTC+2. To get that out of the $gmt time, all I need to do is to add 2 hours (7200 seconds) to it:
And then change it into whatever format I want:
$asctime($calc(7200+$gmt),yyyy-mm-dd HH:nn:ss zzz)
Which returns: 2016-01-23 20:53:49 +0200 GMT
EDIT: /help $asctime