/
^((((31[- /.](0?[13578]|1[02]))|((29|30)[- /.](0?[1,3-9]|1[0-2])))[- /.](1[6-9]|[2-9]\d)?\d{2})|(29\/0?2[- /.](((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))|(0?[1-9]|1\d|2[0-8])[- /.]((0?[1-9])|(1[0-2]))[- /.]((1[6-9]|[2-9]\d)?\d{2})) (20|21|22|23|[0-1]?\d):[0-5]?\d:?[0-5]?\d$
/