To get the date/time the password was last set, use the following sample.
logparser -i:ADS "SELECT cn, to_timestamp(add(mul(to_real(pwdlastset),.0000001),TO_REAL(TO_TIMESTAMP('1601, 01 01 00:00','yyyy, MM dd hh:mm')))) AS date_pwd_last_set FROM 'LDAP://example.com/cn=Users,dc=example,dc=com'" -objClass:user