H $!	Format of the timezone logical SYS$TIME_ZONERULE or POSIX$DEFAULT_TZ.: $!	[This file is taken from the POSIX for VMS environment] $!	 $! FORMAT  $!B $!	<std><offset>[<dst>[<offset>][,<start>[/<time],<end>[/<time>]]] $!	 $! where: 8 $!	<std>		Is the designation for the standard time zone ! $!			(min 3 chars - max 10 chars)  $!1 $!	<dst>		Is the designation for summer time zone ! $!			(min 3 chars - max 10 chars)  $!A $!	<offset>	Indicates the value one must add to the local time to 5 $!			obtain the Universal Coordinate Time (UCT). The  ' $!			<offset> has the following format:  $! $!				[+|-]hh[:mm[:ss]]  $! $!			where: 1 $!				[+|-]	Is the sign. The minus sign (-) must  . $!					be present if the time zone is east of  $!					the Prime Meridian  $!				hh	Hours   $!				mm	Minutes $!				ss	Seconds $!C $!	<start>		Is the date when summer time starts. The <start> field  $ $!			can be in the following format: $!$ $!			Jn	The Julian day n (1<=n<=365). $!			n	The zero-based Julian day n (0<=n<=365)3 $!			Mm.n.d	The day d of the week n of the month m,  $!				where: $!				0<=d<=6; d=0 is Sunday6 $!				1<=n<=5; n=5 means the last d day in the month m- $!					 n=1 means the first week in which the  $!					     d'th day occurs  $!				1<=m<=12; m=1 is January $!> $!	<end>		Is the date when summer time  ends. The <end> field . $!			has the same format as the <start> field. $!< $!	<time>		Describes when, in current local time, the change9 $!			to the other time is made. The <time> field has the  7 $!			same format as the <offset> field except that the   $!			sign is not allowed.  $! $! EXAMPLES  $!6 $!	Canada/Atlantic			1st Sun of Apr -- last Sun of Oct( $!	"AST4:00ADT,M4.1.0/2:00,M10.5.0/2:00" $!5 $!	Canada/Pacific			1st Sun of Apr -- last Sun of Oct ( $!	"PST8:00PDT,M4.1.0/2:00,M10.5.0/2:00" $!@ $!	Continental Europe/Western	last Sun of Mar -- last Sun of Sep, $!	"WET-0:00WET DST,M3.5.0/1:00,M9.5.0/2:00" $!@ $!	Continental Europe/Central	last Sun of Mar -- last Sun of Sep, $!	"CET-1:00CET DST,M3.5.0/2:00,M9.5.0/3:00" $!@ $!	Continental Europe/Central	last Sun of Mar -- last Sun of Sep, $!	"MET-1:00MET DST,M3.5.0/2:00,M9.5.0/3:00" $!@ $!	Continental Europe/Eastern	last Sun of Mar -- last Sun of Sep, $!	"EET-2:00EET DST,M3.5.0/3:00,M9.5.0/4:00" $!  $!	Egypt				May 1st -- Oct 1st		( $!	"EET-2:00EET DST,J121/2:00,J213/2:00" $!- $!	Israel				3rd Sun of Apr -- 4th Sat of Aug ( $!	"IST-3:00IDT,M4.3.0/2:00,M8.4.6/2:00" $! $!	Japan
 $!	"JST-9:00"  $!0 $!	United States/Eastern		historical U.S. rule		 $!	"EST5EDT" $!0 $!	United States/Central		historical U.S. rule		 $!	"CST6CDT" $!1 $!	United States/Mountain		historical U.S. rule		  $!	"MST7MDT" $!0 $!	United States/Pacific		historical U.S. rule		 $!	"PST8PDT" $!/ $!	United States/Alaska		historical U.S. rule		  $!	"AKST9AKDT" $!J $! For more information see the International Standard ISO/IEC 9945-1:1990 $! (also IEEE Std 1003.1-1990).  $!
 $! EXAMPLE
 $! =======/ $! The following definition is valid for Italy:  $!P $! define/system/exec SYS$TIME_ZONERULE "CET-1CET DST-2,M3.5.0/2:00,M9.5.0/3:00" $!P $ DEFINE/SYSTEM/EXEC SYS$TIME_ZONERULE "CET-1:00CET DST,M3.5.0/2:00,M9.5.0/3:00"