WordPress stores in the abbreviations of weekday names in weekday_abbrev weekday variable. It is a single dimensional array, indexed by the weekday name and is set in [wordpress root folder]/wp-includes/locale.php. Just like weekday global variable, weekday_abbrev stores localized values.
Plugin and theme developers can use weekday_abbrev to get abbreviation of a specified weekday name.
Back to full list of global variables.
Technorati tags: weekday_abbrev.
