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.

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