Обсуждение: database role create date

Hi,
Is there a way to get database role create date?

The issue is: i have a bunch of tables owner by user trololo and i have a user trololo_rw, which according to the scripts should have dml-grants on them, but do not actually have. I have an assumption that someone recreated user troololo_rw. So, I know that creation datetime of trololo_rw user should be "2015-01-20 13:38:22.66078" and to confirm / refute my assumptions I am missing the real creation date.

Regards, Mikhail