NAME
    Date::Manip - Date manipulation routines

SYNOPSIS
    Date::Manip is a series of modules which can do pretty much any
    date/time operation you could ever want.

    As of 6.00, there are two ways to use Date::Manip.

    Functional
        Prior to 6.00, Date::Manip had only a functional interface. Existing
        scripts which used older versions of Date::Manip will continue to
        work (though you should check out the Date::Manip::Migration5to6
        document for a list of changes which may be necessary).

    Object-Oriented
        As of 6.00, Date::Manip consists of a set of OO modules. Each have
        their own document (see the SEE ALSO section below). The functional
        interface is now just a wrapper around these OO modules.

        The OO interface consists of the following modules:
        Date::Manip::Date, Date::Manip::Delta, Date::Manip::Recur,
        Date::Manip::TZ, and Date::Manip::Base

        All Date::Manip operations can be performed using the OO modules.
        Most of the common operations can also be done using the functional
        interface, but there are some limitations.

        The biggest limitation is that the functional interface has limited
        time zone handling (though what it has is now correct). For full
        time zone handling, you need to use the OO modules.

    Which interface should you use?

    If you need full time zone support, you need to use the OO interface
    since the functional interface is limited in it's ability to handle time
    zones correctly.

    If you want to write a script that will work with older versions of
    Date::Manip, you need to use the functional interface (but be aware that
    not all config variables in 6.00 are available in 5.xx).

    For new scripts, it is suggested that the OO interface be used.

FUNCTIONAL INTERFACE SYNOPSIS
       use Date::Manip;

       $version = DateManipVersion();

       Date_Init("VAR=VAL","VAR=VAL",...);

       $date = ParseDate(\@args);
       $date = ParseDate($string);
       $date = ParseDate(\$string);

       $date = ParseDateString($string);

       @date = UnixDate($date,@format);
       $date = UnixDate($date,@format);

       $delta = ParseDateDelta(\@args);
       $delta = ParseDateDelta($string);
       $delta = ParseDateDelta(\$string);

       @str = Delta_Format($delta,$dec,@format);
       $str = Delta_Format($delta,$dec,@format);

       $recur = ParseRecur($string,$base,$date0,$date1,$flags);
       @dates = ParseRecur($string,$base,$date0,$date1,$flags);

       $flag = Date_Cmp($date1,$date2);

       $d = DateCalc($d1,$d2 [,$errref] [,$del]);

       $date = Date_SetTime($date,$hr,$min,$sec);
       $date = Date_SetTime($date,$time);

       $date = Date_SetDateField($date,$field,$val [,$nocheck]);

       $date = Date_GetPrev($date,$dow,$today,$hr,$min,$sec);
       $date = Date_GetPrev($date,$dow,$today,$time);

       $date = Date_GetNext($date,$dow,$today,$hr,$min,$sec);
       $date = Date_GetNext($date,$dow,$today,$time);

       $name = Date_IsHoliday($date);

       $listref = Events_List($date);
       $listref = Events_List($date0,$date1);

       $date = Date_ConvTZ($date,$from,$to);

       $flag = Date_IsWorkDay($date [,$flag]);

       $date = Date_NextWorkDay($date,$off [,$time]);

       $date = Date_PrevWorkDay($date,$off [,$time]);

       $date = Date_NearestWorkDay($date [,$tomorrowfirst]);

    In the following routines, $y may be entered as either a 2 or 4 digit
    year (it will be converted to a 4 digit year based on the variable
    YYtoYYYY described below). Month and day should be numeric in all cases.

       $day = Date_DayOfWeek($m,$d,$y);
       $secs = Date_SecsSince1970($m,$d,$y,$h,$mn,$s);
       $secs = Date_SecsSince1970GMT($m,$d,$y,$h,$mn,$s);
       $days = Date_DaysSince1BC($m,$d,$y);
       $day = Date_DayOfYear($m,$d,$y);
       ($y,$m,$d,$h,$mn,$s) = Date_NthDayOfYear($y,$n);
       $days = Date_DaysInYear($y);
       $days = Date_DaysInMonth($m,$y);
       $wkno = Date_WeekOfYear($m,$d,$y,$first);
       $flag = Date_LeapYear($y);
       $day = Date_DaySuffix($d);
       $tz = Date_TimeZone();

DESCRIPTION
    Date::Manip is a series of modules designed to make any common date/time
    manipulation easy to do. Operations such as comparing two times,
    calculating a time a given amount of time from another, or parsing
    international times are all easily done. From the very beginning, the
    main focus of Date::Manip has been to be able to do ANY desired
    date/time operation easily, not necessarily quickly. Also, it is
    definitely oriented towards the type of operations we (as people) tend
    to think of rather than those operations used routinely by computers.
    There are other modules that can do a subset of the operations available
    in Date::Manip much quicker than those presented here, so be sure to
    read the section SHOULD I USE DATE::MANIP in the Date::Manip::Misc
    document before deciding which of the Date and Time modules from CPAN is
    for you.

    Date::Manip deals with time as it is presented the Gregorian calendar
    (the one currently in use). The Julian calendar defined leap years as
    every 4th year. The Gregorian calendar improved this by making every
    100th year NOT a leap year, unless it was also the 400th year. The
    Gregorian calendar has been extrapolated back to the year 0001 AD and
    forward to the year 9999 AD. Note that in historical context, the Julian
    calendar was in use until 1582 when the Gregorian calendar was adopted
    by the Catholic church. Protestant countries did not accept it until
    later; Germany and Netherlands in 1698, British Empire in 1752, Russia
    in 1918. Note that the Gregorian calendar is itself imperfect and at
    some point may need to be corrected. No attempt is made to correct for
    that, and my great great great grandchildren will be long dead before
    this even occurs, so it's not an immediate concern. Yes, this is similar
    to the attitude that caused the great Y2K problem... but I have an
    excuse: I don't know what the correction will be, so I can't possibly
    implement it. Nobody doubted that the year after 1999 would be known as
    2000 :-).

    Date::Manip is therefore not equipped to truly deal with historical
    dates, but should be able to perform (virtually) any operation dealing
    with a modern time and date.

    Date::Manip has functionality to work with several fundamental types of
    data.

    dates
        A date consists of three pieces of information: a calendar date, a
        time of day, and time zone information. All are fully handled.

    delta
        A delta is an amount of time (i.e. the amount of time between two
        different dates).

    recurrence
        A recurring event is something which occurs on a regular recurring
        basis.

    Among other things, Date::Manip allow you to:

    *   Enter a date in practically any format you choose.

    *   Compare two dates, entered in widely different formats to determine
        which is earlier.

    *   Extract any information you want from ANY date using a format string
        similar to the Unix date command.

    *   Determine the amount of time between two dates, or add an amount of
        time to a date to get a second date.

    *   Work with dates with dates using international formats (foreign
        month names, 12/10/95 referring to October rather than December,
        etc.).

    *   To find a list of dates where a recurring event happens.

    Each of these tasks is trivial (one or two lines at most) with this
    package.

ROUTINES
    DateManipVersion
           $version = DateManipVersion;

        Returns the version of Date::Manip.

    Date_Init
           Date_Init("VAR=VAL","VAR=VAL",...);

        The Date_Init function is used to set any of the Date::Manip
        configuration variables described in the Date::Manip::Config
        document.

        The strings to pass in are of the form "VAR=VAL". Any number may be
        included and they can come in any order. VAR may be any
        configuration variable. VAL is any allowed value for that variable.
        For example, to switch from English to French and use non-US format
        (so that 12/10 is Oct 12), do the following:

           Date_Init("Language=French","DateFormat=non-US");

        Note that variables are parsed in the order they are given, so
        "DateFormat=non-US", "ConfigFile=./manip.cnf" may not give the
        expected result. To be safe, ConfigFile should always appear first
        in the list.

    ParseDate
           $date = ParseDate(\@args);
           $date = ParseDate($string);
           $date = ParseDate(\$string);

        This takes an array or a string containing a date and parses it.
        When the date is included as an array (for example, the arguments to
        a program) the array should contain a valid date in the first one or
        more elements (elements after a valid date are ignored). Elements
        containing a valid date are shifted from the array. The largest
        possible number of elements which can be correctly interpreted as a
        valid date are always used. If a string is entered rather than an
        array, that string is tested for a valid date. The string is
        unmodified, even if passed in by reference.

        The ParseDate routine is primarily used to handle command line
        arguments. If you have a command where you want to enter a date as a
        command line argument, you can use Date::Manip to make something
        like the following work:

           mycommand -date Dec 10 1997 -arg -arg2

        No more reading man pages to find out what date format is required
        in a man page.

        Historical note: this is originally why the Date::Manip routines
        were written (though long before they were released as the
        Date::Manip module). I was using a bunch of programs (primarily
        batch queue managers) where dates and times were entered as command
        line options and I was getting highly annoyed at the many different
        (but not compatible) ways that they had to be entered. Date::Manip
        originally consisted of basically 1 routine which I could pass
        "@ARGV" to and have it remove a date from the beginning.

    ParseDateString
           $date = ParseDateString($string);

        This parses a string containing a date and returns it. Refer to the
        Date::Manip::Date documentation for valid date formats. The date
        returned is in the local time zone.

    UnixDate
           @out = UnixDate($date,@in);

        This takes a date and a list of strings containing formats roughly
        identical to the format strings used by the UNIX date(1) command.
        Each format is parsed and an array of strings corresponding to each
        format is returned.

        The formats are described in the Date::Manip::Date document.

    ParseDateDelta
           $delta = ParseDateDelta(\@args);
           $delta = ParseDateDelta($string);
           $delta = ParseDateDelta(\$string);

        In the first form, it takes an array and shifts a valid delta from
        it. In the other two forms, it parses a string to see if it contains
        a valid delta.

        A valid delta is returned if found. Otherwise, an empty string is
        returned.

    Delta_Format
           @out = Delta_Format($delta [,$mode], $dec,@in);

        This is similar to the UnixDate routine except that it extracts
        information from a delta.

        When formatting fields in a delta, the Date::Manip 6.00 formats have
        changed and are much more powerful. The old 5.xx formats are still
        available for the Delta_Format command for backward compatibility.
        These formats include:

           %Xv  : print the value of the field X

           %Xd  : print the value of the field X and all
                  smaller units in terms of X

           %Xh  : print the value of field X and all
                  larger units in terms of X

           %Xt  : print the value of all fields in
                  terms of X

        These make use of the $mode and $dec arguments to determine how to
        format the information.

        $dec is an integer, and is required, It tells the number of decimal
        places to use.

        $mode is either "exact" or "approx" and defaults to "exact" if it is
        not included.

        In "exact" mode, only exact relationships are used. This means that
        there can be no mixing of the Y/M and W/D/H/MN/S segments (for
        non-business deltas, or Y/M, W, and D/H/MN/S segments for business
        deltas) because there is no exact relation between the fields of
        each set.

        In "approx" mode, approximate relationships are used. These are
        described in the Date::Manip::Delta manual.

        So, in "exact" mode, with a non-business delta, and $dec = 2, the
        following are equivalent:

           old style    new style
           ---------    ---------
           %Xv          %Xv
           %hd          %.2hhs
           %hh          %.2hdh
           %ht          %.2hds
           %yd          %.2yyM

        In "approximate" mode, the following are equivalent:

           old style    new style
           ---------    ---------
           %Xv          %Xv
           %hd          %.2hhs
           %hh          %.2hdh
           %ht          %.2hys
           %yd          %.2yys

        If you want to use the new style formats in Delta_Format, use one of
        the calls:

           Delta_Format($delta, @in);
           Delta_Format($delta, undef, @in);

        If the first element of @in is an integer, you have to use the 2nd
        form.

        The old formats will remain available for the time being, though at
        some point they may be deprecated.

    DateCalc
         $d = DateCalc($d1,$d2 [,\$err] [,$mode]);

        This takes two dates, deltas, or one of each and performs the
        appropriate calculation with them. Dates must be a string that can
        be parsed by ParseDateString. Deltas must be a string that can be
        parsed by ParseDateDelta. Two deltas add together to form a third
        delta. A date and a delta returns a 2nd date. Two dates return a
        delta (the difference between the two dates).

        Since the two items can be interpreted as either dates or deltas,
        and since many strings can be interpreted as both a date or a delta,
        it is a good idea to pass the input through ParseDateDelta, if
        appropriate if there is any ambiguity. For example, the string
        "09:00:00" can be interpreted either as a date (today at 9:00:00) or
        a delta (9 hours). To avoid unexpected results, avoid calling
        DateCalc as:

          $d = DateCalc("09:00:00",$someothervalue);

        Instead, call it as:

          $d = DateCalc(ParseDate("09:00:00"),$someothervalue);

        to force it to be a date, or:

          $d = DateCalc(ParseDateDelta("09:00:00"),$someothervalue);

        to force it to be a delta. This will avoid unexpected results.
        Passing something through ParseDate is optional since they will be
        treated as dates by default (and for performance reasons, you're
        better off not calling ParseDate).

        If there is no ambiguity, you are better off NOT doing this for
        performance reasons. If the delta is a business delta, you
        definitely should NOT do this.

        One other thing to note is that when parsing dates, a delta can be
        interpreted as a date relative to now. DateCalc will ALWAYS treat a
        delta as a delta, NOT a date.

        For details on how calculations are done, refer to the
        Date::Manip::Calc documentation.

        By default, math is done using an exact mode.

        If two deltas, or a date and a delta are passed in, $mode may be
        used to force the delta to be either business or non-business mode
        deltas. If $mode is 0 or 1, the delta(s) will be non-business.
        Otherwise, they will be business deltas. If $mode is passed in, it
        will be used only if the business or non-business state was not
        explicitly set in the delta.

        If two dates are passed in, $mode is used to determine the type of
        calculation. By default, an exact delta is produced. If $mode is 1,
        an approximate delta is produced. If $mode is 2, a business
        approximate (bapprox) mode calculation is done. If $mode is 3, a
        exact business mode delta is produced.

        If \$err is passed in, it is set to: 1 is returned if $d1 is not a
        delta or date 2 is returned if $d2 is not a delta or date 3 if any
        other error occurs. This argument is optional, but if included, it
        must come before $mode.

        Nothing is returned if an error occurs.

    ParseRecur
           $recur = ParseRecur($string [,$base,$date0,$date1,$flags]);
           @dates = ParseRecur($string [,$base,$date0,$date1,$flags]);

        This parses a string containing a recurrence and returns a fully
        specified recurrence, or a list of dates referred to.

        $string can be any of the forms:

           FREQ
           FREQ*FLAGS
           FREQ*FLAGS*BASE
           FREQ*FLAGS*BASE*DATE0
           FREQ*FLAGS*BASE*DATE0*DATE1

        where FREQ is a frequence (see the Date::Manip::Delta
        documentation), FLAGS is a comma separated list of flags, and BASE,
        DATE0, and DATE1 are date strings. The dates and flags can also be
        passed in as $base, $date0, $date1, and $flags, and these will
        override any values in $string.

        In scalar context, the fully specified recurrence (or as much
        information as is available) will be returned. In list context, a
        list of dates will be returned.

    Date_Cmp
           $flag = Date_Cmp($date1,$date2);

        This takes two dates and compares them. Any dates that can be parsed
        will be compared.

    Date_GetPrev
           $date = Date_GetPrev($date,$dow, $curr [,$hr,$min,$sec]);
           $date = Date_GetPrev($date,$dow, $curr [,$time]);
           $date = Date_GetPrev($date,undef,$curr,$hr,$min,$sec);
           $date = Date_GetPrev($date,undef,$curr,$time);

        This takes a date (any string that may be parsed by ParseDateString)
        and finds the previous occurrence of either a day of the week, or a
        certain time of day.

        This is documented in the "prev" method in Date::Manip::Date, except
        that here, $time is a string (HH, HH:MN:, or HH:MN:SS), and $dow may
        be a string of the form "Fri" or "Friday".

    Date_GetNext
           $date = Date_GetNext($date,$dow, $curr [,$hr,$min,$sec]);
           $date = Date_GetNext($date,$dow, $curr [,$time]);
           $date = Date_GetNext($date,undef,$curr,$hr,$min,$sec);
           $date = Date_GetNext($date,undef,$curr,$time);

        Similar to Date_GetPrev.

    Date_SetTime
           $date = Date_SetTime($date,$hr,$min,$sec);
           $date = Date_SetTime($date,$time);

        This takes a date (any string that may be parsed by ParseDateString)
        and sets the time in that date. For example, one way to get the time
        for 7:30 tomorrow would be to use the lines:

           $date = ParseDate("tomorrow");
           $date = Date_SetTime($date,"7:30");

        $time is a string (HH, HH:MN, or HH:MN:SS).

    Date_SetDateField
           $date = Date_SetDateField($date,$field,$val);

        This takes a date and sets one of its fields to a new value. $field
        is any of the strings "y", "m", "d", "h", "mn", "s" (case
        insensitive) and $val is the new value.

    Date_IsHoliday
           $name = Date_IsHoliday($date);

        This returns undef if $date is not a holiday, or a string containing
        the name of the holiday otherwise. An empty string is returned for
        an unnamed holiday.

    Date_IsWorkDay
           $flag = Date_IsWorkDay($date [,$flag]);

        This returns 1 if $date is a work day. If $flag is non-zero, the
        time is checked to see if it falls within work hours. It returns an
        empty string if $date is not valid.

    Events_List
           $ref = Events_List($date);
           $ref = Events_List($date,0      [,$flag]);
           $ref = Events_List($date,$date1 [,$flag]);

        This returns a list of events. If $flag is not given, or is equal to
        0, the list (returned as a reference) is similar to the the list
        returned by the Date::Manip::Date::list_events method with $format =
        "dates". The only difference is that it is formatted slightly
        different to be backward compatible with Date::Manip 5.xx.

        The data from the list_events method is:

           ( [DATE1, NAME1a, NAME1b, ...],
             [DATE2, NAME2a, NAME2b, ...],
             ...
           )

        The reference returned from Events_List (if $flag = 0) is:

           [ DATE1, [NAME1a, NAME1b, ...],
             DATE2, [DATE2a, DATE2b, ...],
             ...
           ]

        For example, if the following events are defined:

          2000-01-01 ; 2000-03-21  = Winter
          2000-03-22 ; 2000-06-21  = Spring
          2000-02-01               = Event1
          2000-05-01               = Event2
          2000-04-01-12:00:00      = Event3

        the following examples illustrate the function:

          Events_List("2000-04-01")
           => [ 2000040100:00:00, [ Spring ] ]

          Events_List("2000-04-01 12:30");
           => [ 2000040112:30:00, [ Spring, Event3 ] ]

          Events_List("2000-04-01",0);
           => [ 2000040100:00:00, [ Spring ],
                2000040112:00:00, [ Spring, Event3 ],
                2000040113:00:00, [ Spring ] ]

          Events_List("2000-03-15","2000-04-10");
           => [ 2000031500:00:00, [ Winter ],
                2000032200:00:00, [ Spring ]
                2000040112:00:00, [ Spring, Event3 ]
                2000040113:00:00, [ Spring ] ]

        If $flag is 1, then a tally of the amount of time given to each
        event is returned. Time for which two or more events apply is
        counted for both.

          Events_List("2000-03-15","2000-04-10",1);
           => { Event3 => +0:0:+0:0:1:0:0,
                Spring => +0:0:+2:4:23:0:0,
                Winter => +0:0:+1:0:0:0:0
              }

        When $flag is 2, a more complex tally with no event counted twice is
        returned.

          Events_List("2000-03-15","2000-04-10",2);
           => { Event3+Spring => +0:0:+0:0:1:0:0,
                Spring        => +0:0:+2:4:22:0:0,
                Winter        => +0:0:+1:0:0:0:0
              }

        The hash contains one element for each combination of events.

        In both of these cases, there may be a hash element with an empty
        string as the key which contains the amount of time with no events
        active.

    Date_DayOfWeek
           $day = Date_DayOfWeek($m,$d,$y);

        Returns the day of the week (1 for Monday, 7 for Sunday).

    Date_SecsSince1970
           $secs = Date_SecsSince1970($m,$d,$y,$h,$mn,$s);

        Returns the number of seconds since Jan 1, 1970 00:00 (negative if
        date is earlier).

    Date_SecsSince1970GMT
           $secs = Date_SecsSince1970GMT($m,$d,$y,$h,$mn,$s);

        Returns the number of seconds since Jan 1, 1970 00:00 GMT (negative
        if date is earlier).

    Date_DaysSince1BC
           $days = Date_DaysSince1BC($m,$d,$y);

        Returns the number of days since Dec 31, 1BC. This includes the year
        0001.

    Date_DayOfYear
           $day = Date_DayOfYear($m,$d,$y);

        Returns the day of the year (1 to 366)

    Date_NthDayOfYear
           ($y,$m,$d,$h,$mn,$s) = Date_NthDayOfYear($y,$n);

        Returns the year, month, day, hour, minutes, and decimal seconds
        given a floating point day of the year.

        All arguments must be numeric. $n must be greater than or equal to 1
        and less than 366 on non-leap years and 367 on leap years.

        NOTE: When $n is a decimal number, the results are non-intuitive
        perhaps. Day 1 is Jan 01 00:00. Day 2 is Jan 02 00:00. Intuitively,
        you might think of day 1.5 as being 1.5 days after Jan 01 00:00, but
        this would mean that Day 1.5 was Jan 02 12:00 (which is later than
        Day 2). The best way to think of this function is a time line
        starting at 1 and ending at 366 (in a non-leap year). In terms of a
        delta, think of $n as the number of days after Dec 31 00:00 of the
        previous year.

    Date_DaysInYear
           $days = Date_DaysInYear($y);

        Returns the number of days in the year (365 or 366)

    Date_DaysInMonth
           $days = Date_DaysInMonth($m,$y);

        Returns the number of days in the month.

    Date_WeekOfYear
           $wkno = Date_WeekOfYear($m,$d,$y,$first);

        Figure out week number. $first is the first day of the week which is
        usually 1 (Monday) or 7 (Sunday), but could be any number between 1
        and 7 in practice.

        NOTE: This routine should only be called in rare cases. Use UnixDate
        with the %W, %U, %J, %L formats instead. This routine returns a week
        between 0 and 53 which must then be "fixed" to get into the ISO-8601
        weeks from 1 to 53. A date which returns a week of 0 actually
        belongs to the last week of the previous year. A date which returns
        a week of 53 may belong to the first week of the next year.

    Date_LeapYear
           $flag = Date_LeapYear($y);

        Returns 1 if the argument is a leap year Written by David Muir
        Sharnoff <muir@idiom.com>

    Date_DaySuffix
           $day = Date_DaySuffix($d);

        Add `st', `nd', `rd', `th' to a date (i.e. 1st, 22nd, 29th). Works
        for international dates.

    Date_TimeZone
           $tz = Date_TimeZone;

        This determines and returns the local time zone. If it is unable to
        determine the local time zone, the following error occurs:

           ERROR: Date::Manip unable to determine Time Zone.

        See the Date::Manip::TZ documentation (DETERMINING THE LOCAL TIME
        ZONE) for more information.

    Date_ConvTZ
           $date = Date_ConvTZ($date,$from,$to);

        This converts a date (which MUST be in the format returned by
        ParseDate) from one time zone to another.

        $from and $to each default to the local time zone. If they are
        given, they must be any time zone or alias understood by
        Date::Manip.

        If an error occurs, an empty string is returned.

    Date_NextWorkDay
           $date = Date_NextWorkDay($date,$off [,$time]);

        Finds the day $off work days from now. If $time is passed in, we
        must also take into account the time of day.

        If $time is not passed in, day 0 is today (if today is a workday) or
        the next work day if it isn't. In any case, the time of day is
        unaffected.

        If $time is passed in, day 0 is now (if now is part of a workday) or
        the start of the very next work day.

    Date_PrevWorkDay
           $date = Date_PrevWorkDay($date,$off [,$time]);

        Similar to Date_NextWorkDay.

    Date_NearestWorkDay
           $date = Date_NearestWorkDay($date [,$tomorrowfirst]);

        This looks for the work day nearest to $date. If $date is a work
        day, it is returned. Otherwise, it will look forward or backwards in
        time 1 day at a time until a work day is found. If $tomorrowfirst is
        non-zero (or if it is omitted and the config variable TomorrowFirst
        is non-zero), we look to the future first. Otherwise, we look in the
        past first. In other words, in a normal week, if $date is Wednesday,
        $date is returned. If $date is Saturday, Friday is returned. If
        $date is Sunday, Monday is returned. If Wednesday is a holiday,
        Thursday is returned if $tomorrowfirst is non-nil or Tuesday
        otherwise.

    For all of the functions which return a date, the format of the returned
    date is governed by the Printable config variable. If a date is
    returned, it is in the local time zone, NOT the time zone the date was
    parsed in.

SEE ALSO
    The following documents describe various parts of Date::Manip. The
    following documents describe the basic operation of the Date::Manip
    package:

    An introduction to the Date::Manip classes and how to configure them:

      Date::Manip::Objects    - a basic description of the various
                                Date::Manip modules, and how they
                                work together, and how configuration
                                affects them
      Date::Manip::Config     - information for configuring
                                Date::Manip

    The methods available in each class:

      Date::Manip::Obj        - base class (modules listed below
                                inherit the methods defined in this
                                class)
      Date::Manip::Base       - module for doing low-level date
                                operations
      Date::Manip::TZ         - module for working with time zones
      Date::Manip::Date       - date operations
      Date::Manip::Delta      - delta operations
      Date::Manip::Recur      - recurrence operations

    Miscellaneous information:

      Date::Manip::Zones      - time zone data included in Date::Manip
      Date::Manip::Calc       - date calculations
      Date::Manip::Holidays   - information on defining and using
                                holidays and events

    Information about the module and administrative things:

      Date::Manip::Migration5to6
                              - information on changes necessary
                                to scripts when upgrading from
                                5.xx to 6.xx
      Date::Manip::Misc       - miscellaneous information about
                                Date::Manip (who should use it;
                                acknowledgements)
      Date::Manip::Changes5   - backward incompatible changes in
                                Date::Manip 5.xx
      Date::Manip::Changes5to6- differences between version 5.xx
                                and 6.00 (including information
                                on upgrading)
      Date::Manip::Changes6   - backward incompatible changes in
                                Date::Manip 6.xx
      Date::Manip::Problems   - common problems and instructions
                                for reporting bugs
      Date::Manip::Examples   - examples of how to use Date::Manip

LICENSE
    This script is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

AUTHOR
    Sullivan Beck (sbeck@cpan.org)

