News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Derick Rethans' Blog:
Unix Epoch and PHP's calendar system
November 12, 2009 @ 10:44:51

Based on a fix for a recent bug, Derick Rethans wanted to clear up something about the Unix Epoc's definition and how it relates to the UTC time zone.

While right now it is proper to define the Unix Epoch at "1970-01-01 00:00:00 UTC", UTC wasn't actually defined until 1972. So it would be more correct to define the Unix Epoch as "the number of seconds elapsed since midnight proleptic Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds." (from Wikipedia).

He talks about the calendar PHP uses internally and how dates predating it's use don't make much sense either (as well as the modified version PHP uses that includes "year zero").

2 comments voice your opinion now!
unix epoch datetime calendar utc


blog comments powered by Disqus

Similar Posts

Davey Shafik's Blog: DateTime Timestamp Parsing

Derick Rethans: ISO 8601 week dates

Websanova.com: Timezones, the Right Way

Chronosight Blog: Inline AJAX Calendar using PHP

Derick Rethans' Blog: Storing Date/Times in Databases


Community Events





Don't see your event here?
Let us know!


language interview community framework bugfix wordpress podcast introduction library application developer series configure laravel list threedevsandamaybe project release code api

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework