TZCOMP

NAME

SYNOPSIS

DESCRIPTION

This option is available:

-d directory

Create time zone information files in the named directory rather than in the standard directory named below.

A sharp characters (#) in the input introduces a comment which extends to the end of the line the sharp character appears on. Any line which is blank (after comment stripping) is ignored. Non-blank lines are expected to be of one of three types: rule lines, zone lines, and link lines.

A rule line has the form

     


Rule NAME   FROM TO   TYPE IN  ON      AT   SAVE LETTER/S

For example:


     
Rule MostNA 1969 1973 -    Apr lastSun 2:00 1:00 D

NAME

Gives the (arbitrary) name of the set of rules this rule is part of.

FROM

Gives the first year in which the rule applies.

TO

Gives the last year in which the rule applies. The word `only' may be used to repeat the value of the FROM field.

TYPE

Gives the type of year in which the year applies. If TYPE is "-" then the rule is taken to apply in all years between FROM and TO inclusive. If TYPE is something else, then the command
      years from to type
is executed with arguments from, to, and type taken from the rule line; the rule is taken to apply only in those years printed by the years command.

The distributed years command is a shell script that can handle year types uspres (United States presidential election years) and nonpres (all other years); other year types may be added by changing the script.

IN

Names the month in which the rule takes effect. Month names may be abbreviated.

ON

Gives the day on which the rule takes effect. Recognized forms include:

5        the fifth of the month
lastSun  the last Sunday in the month
lastMon  the last Monday in the month
Sun>=8   first Sunday on or after the eighth
Sun<=25  last Sunday on or before the 25th

Names of days of the week may be abbreviated or spelled out in full. Note that there must be no spaces within the ON field (or within any other field).

AT

Gives the time of day at which the rule takes affect. Recognized forms include:

2        time in hours
2:00     time in hours and minutes
15:00    24-hour format time (for times after noon)
1:28:14  time in hours, minutes, and seconds

SAVE

Gives the amount of time to be added to local standard time when the rule is in effect. This field has the same format as the AT field.

LETTER/S

Gives the "variable part" (for example, the 'S' or 'D' in "EST" or "EDT") of time zone abbreviations to be used when this rule is in effect. If this field is "-", the variable part is null.

A zone line has the form

     
Zone NAME    GMTOFF RULES  FORMAT

For example:



     Zone    Eastern       -5:00MostNAE%sT

NAME

The name of the time zone. This is the name used in creating the time zone information file for the zone.

GMTOFF

The amount of time to add to GMT to get standard time in this zone. This field has the same format as the AT and SAVE fields of rule lines; begin the field with a minus sign if time must be subtracted from GMT.

RULES

The name of the rule(s) that apply in the time zone. If this field contains "-" then standard time always applies in the time zone.

FORMAT

The format for time zone abbreviations in this time zone. The pairs of characters "%s" is used to show where the "variable part" of the time zone abbreviation goes.

A link line has the form

     
Link LINK-FROM LINK-TO

For example:



     Link      EasternEST5EDT

Lines may appear in any order in the input.  

EXAMPLE

FILES

SEE ALSO

# Rule         NAMEFROMTOTYPEINONATSAVELETTER/S
Rule MostNA    19691973-AprlastSun2:001:00D
Rule MostNA    19691973-OctlastSun2:000S
Rule MostNA    1974only-Jan62:001:00D
Rule MostNA    1974only-Nov242:000S
Rule MostNA    1975only-Feb232:001:00D
Rule MostNA    1975only-Oct262:000S
Rule MostNA    19762037-AprlastSun2:001:00D
Rule MostNA    19762037-OctlastSun2:000S

# Almost surely wrong:

# Rule         NAMEFROMTOTYPEINONATSAVELETTER/S
Rule Oz-Eur    19691973-AprlastSun2:001:00S
Rule Oz-Eur    19691973-OctlastSun2:000-
Rule Oz-Eur    1974only-Jan62:001:00S
Rule Oz-Eur    1974only-Nov242:000-
Rule Oz-Eur    1975only-Feb232:001:00S
Rule Oz-Eur    1975only-Oct262:000-
Rule Oz-Eur    19762037-AprlastSun2:001:00S
Rule Oz-Eur    19762037-OctlastSun2:000-

# New names

# Zone         NAMEGMTOFFRULESFORMAT
Zone Atlantic  -4:00MostNAA%sT
Zone Eastern   -5:00MostNAE%sT
Zone Central   -6:00MostNAC%sT
Zone Mountain  -7:00MostNAM%sT
Zone Pacific   -8:00MostNAP%sT
Zone Yukon     -9:00MostNAY%sT
Zone Hawaiian  -10:00MostNAH%sT
Zone Newfoundland-3:30-NST
Zone Japan     9:00-JST
Zone WET       0Oz-EurWE%sT
Zone MET       1 Oz-EurME%sT
Zone EET       2Oz-EurEE%sT
Zone AEST      10:00Oz-EurAES%sT
Zone ACST      9:30Oz-EurACS%sT
Zone AWST      8:00-AWST# No Daylight Saving here?

# # A settz("") uses the code's built-in GMT without going to disk to get # the information. Still, we want things to work if somebody does a # settz("GMT"), so. . . #

Zone GMT       0-GMT

# Old names

# Link         LINK-FROMLINK-TO
Link Eastern   EST5EDT
Link Central   CST6CDT
Link Mountain  MST7MDT
Link Pacific   PST8PDT

# "Pacific Presidential Election Time" is being contemplated in Congress

# Rule         NAMEFROMTOTYPEINONATSAVELETTER/S
Rule Twilite   19691973-AprlastSun2:001:00D
Rule Twilite   19691973-OctlastSun2:000S
Rule Twilite   1974only-Jan62:001:00D
Rule Twilite   1974only-Nov242:000S
Rule Twilite   1975only-Feb232:001:00D
Rule Twilite   1975only-Oct262:000S
Rule Twilite   19762037-AprlastSun2:001:00D
Rule Twilite   19761987-OctlastSun2:000S
Rule Twilite   19882037uspresOctlastSun2:001:00PE
Rule Twilite   19882037uspresNovSun>=72:000S
Rule Twilite   19882037nonpresOctlastSun2:000S

# Zone         NAMEGMTOFFRULESFORMAT
Zone New-Pacific-8:00TwiliteP%sT

# Next really belongs in a separate file

Link Eastern   localtime
End of tzinfo exit --      UUCP: ..decvax!seismo!elsie!ado ARPA: elsie!ado@seismo.ARPA
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Volume-Number: Volume 6, Number 32

Index

NAME

SYNOPSIS

DESCRIPTION

EXAMPLE

FILES

SEE ALSO