GMTIME{"format"} -- formatted GM time

• Syntax: %GMTIME{"format"}%
• Supported variables:

  Variable:	Unit:	Example
  $seconds	seconds	59
  $minutes	minutes	59
  $hours	hours	23
  $day	day of month	31
  $wday	day of the Week (Sun, Mon, Tue, Wed, Thu, Fri, Sat)	Thu
  $dow	day of the week (Sun = 0)	2
  $week	number of week in year (ISO 8601)	34
  $month	short name of month	Dec
  $mo	2 digit month	12
  $year	4 digit year	1999
  $ye	2 digit year	99
  $tz	either "GMT" (if set to gmtime), or "Local" (if set to servertime)	GMT
  $iso	ISO format timestamp	2018-07-17T05:19:38Z
  $rcs	RCS format timestamp	2018/07/17 05:19:38
  $http	E-mail & http format timestamp	Tue, 17 Jul 2018 05:19:38 GMT
  $epoch	Number of seconds since 00:00 on 1st January, 1970	1531804778

• Variables can be shortened to 3 characters
• Example: %GMTIME{"$day $month, $year - $hour:$min:$sec"}% expands to 17 Jul, 2018 - 05:19:38
• Note: When used in a template topic, this variable will be expanded when the template is used to create a new topic. See TWikiTemplates#TemplateTopicsVars for details.
• Related: DISPLAYTIME, GMTIME, REVINFO, SERVERTIME