unix_epoch¶ ↑

• github.com/chetan/unix_epoch

Ruby library that adds the following methods to the DateTime class for handling Unix timestamps.

* from_unix_ts(unix_ts, offset)
* to_unix_ts()
* to_i()

One advantage of using this library over Time.at() is the correct handling of very large dates (> 2038) on 32-bit systems.

Documentation is available online at at rdoc.info

require "unix_epoch"
dt = DateTime.from_unix_ts(1301103992)
dt.to_i == 1301103992

sudo gem install unix_epoch

Here’s some good information on various Calendar systems:

• mysite.verizon.net/aesir_research/date/back.htm

• secure.wikimedia.org/wikipedia/en/wiki/Julian_day

• www.fourmilab.ch/solar/help/timedate.html

And the Perl library from which I borrowed some ideas:

• search.cpan.org/~chorny/DateTime-Format-Epoch-0.13/

(The MIT License)

Copyright © 2011 Pixelcop Research, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.