PDT   UTC-7

   In addition you may specify any commercial time zone by using
   &quot;offset&quot; notation. This notation starts with the letters &quot;UTC&quot;
   followed by a + for time zones east of Greenwich and - for
   time zones west of Greenwich. This is followed by the number
   of hours to add or subtract from UTC. This is optionally followed
   by a colon ':' and the number of minutes to add or subtract (based
   on the sign that follows &quot;UTC&quot;) to get the
   local time zone. Thus to