perldoc > DateTime::LeapSecond

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📛 NAME

DateTime::LeapSecond — leap seconds table and utilities

🚀 Quick Reference

Use Case	Command	Description
Calculate leap seconds between two dates	DateTime::LeapSecond::leap_seconds($rd2) - DateTime::LeapSecond::leap_seconds($rd1)	📏 Returns the number of accumulated leap seconds difference
Get leap seconds for a specific date	DateTime::LeapSecond::leap_seconds($rd)	📅 Returns accumulated leap seconds for that day
Get extra seconds for a day	DateTime::LeapSecond::extra_seconds($rd)	⚖️ Returns leap seconds for that day (range -2..2)
Get day length	DateTime::LeapSecond::day_length($rd)	⏳ Returns seconds in that day (range 86398..86402)

🏷️ VERSION

version 1.55

📋 SYNOPSIS

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);

📖 DESCRIPTION

This module is used to calculate leap seconds for a given Rata Die day. It is used when DateTime cannot compile the XS version of this code.

This library is known to be accurate for dates until Jun 2020.

There are no leap seconds before 1972, because that's the year this system was implemented.

• leap_seconds($rd) — Returns the number of accumulated leap seconds for a given day.
• extra_seconds($rd) — Returns the number of leap seconds for a given day, in the range -2 .. 2.
• day_length($rd) — Returns the number of seconds for a given day, in the range 86398 .. 86402.

🔗 SEE ALSO

<http://hpiers.obspm.fr/eop-pc/earthor/utc/leapsecond.html>

🤝 SUPPORT

Bugs may be submitted at <https://github.com/houseabsolute/DateTime.pm/issues>.

There is a mailing list available for users of this distribution, <mailto:datetime AT perl.org>.

📂 SOURCE

The source code repository for DateTime can be found at <https://github.com/houseabsolute/DateTime.pm>.

✍️ AUTHOR

Dave Rolsky <autarch AT urth.org>

📄 COPYRIGHT AND LICENSE

This software is Copyright (c) 2003 - 2021 by Dave Rolsky.

This is free software, licensed under:

The Artistic License 2.0 (GPL Compatible)

The full text of the license can be found in the LICENSE file included with this distribution.

📛 NAME 🚀 Quick Reference 🏷️ VERSION 📋 SYNOPSIS 📖 DESCRIPTION 🔗 SEE ALSO 🤝 SUPPORT 📂 SOURCE ✍️ AUTHOR 📄 COPYRIGHT AND LICENSE