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.\" ========================================================================
.\"
.IX Title "DateTime::LeapSecond 3pm"
.TH DateTime::LeapSecond 3pm "2014-01-02" "perl v5.18.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
DateTime::LeapSecond \- leap seconds table and utilities
.SH "VERSION"
.IX Header "VERSION"
version 1.06
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  use DateTime;
\&  use DateTime::LeapSecond;
\&
\&  print "Leap seconds between years 1990 and 2000 are ";
\&  print DateTime::Leapsecond::leap_seconds( $utc_rd_2000 ) \-
\&        DateTime::Leapsecond::leap_seconds( $utc_rd_1990 );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is used to calculate leap seconds for a given Rata Die
day. It is used when DateTime.pm cannot compile the \s-1XS\s0 version of
this code.
.PP
This library is known to be accurate for dates until December 2009.
.PP
There are no leap seconds before 1972, because that's the year this
system was implemented.
.IP "\(bu" 4
leap_seconds( \f(CW$rd\fR )
.Sp
Returns the number of accumulated leap seconds for a given day,
in the range 0 .. 22.
.IP "\(bu" 4
extra_seconds( \f(CW$rd\fR )
.Sp
Returns the number of leap seconds for a given day,
in the range \-2 .. 2.
.IP "\(bu" 4
day_length( \f(CW$rd\fR )
.Sp
Returns the number of seconds for a given day,
in the range 86398 .. 86402.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
<http://hpiers.obspm.fr/eop\-pc/earthor/utc/leapsecond.html>
.PP
http://datetime.perl.org
.SH "AUTHOR"
.IX Header "AUTHOR"
Dave Rolsky <autarch@urth.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is Copyright (c) 2013 by Dave Rolsky.
.PP
This is free software, licensed under:
.PP
.Vb 1
\&  The Artistic License 2.0 (GPL Compatible)
.Ve
