id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
16416	"date template tag should support ""e"" and ""o"" format character"	Carsten Fuchs	Dan Poirier	"The date template tag currently supports the ""W"" (ISO 8601 week number) format character, but not the complementing ""o"" (ISO 8601 year number machting the ISO week number) character.

Both are described at the documentation that the date template tag is referring to:
http://de2.php.net/manual/en/function.date.php

A workaround is possible with a custom template tag, returning the result of `datetime.strftime(""%G"")`.
"	New feature	closed	Template system	1.3	Normal	fixed	ISO 8601		Ready for checkin	1	0	0	0	0	0