yes. I saw only 00:00 time format. 
It's subversion server side problem. 
For example 2 commits from 1 PC:

svn propget svn:date --revprop -r XXXXX
2014-01-07T5:58:36.048176Z
svn propget svn:date --revprop -r YYYYY
2014-01-06T19:07:14.533478Z