Whoops. This is the right patch
--- et_EE~ 2009-05-01 00:37:18.000000000 +0300 +++ et_EE 2010-01-04 11:03:23.000000000 +0200 @@ -2197,8 +2197,8 @@ <U0020><U0025><U0048><U003A><U0025><U004D><U003A><U0025><U0053><U0020>/ <U0025><U005A><U0020><U0025><U0059>" week 7;19971130;4 -first_weekday 1 -first_workday 1 +first_weekday 2 +first_workday 2 END LC_TIME LC_MESSAGES