Not for the database *directly*, eg
SQL> select sysdate+100000 from dual;
SYSDATE+10
----------
16/09/2290
1 row selected.
SQL> select sysdate+200000 from dual;
SYSDATE+20
----------
01/07/2564
1 row selected.
SQL> select sysdate+500000 from dual;
SYSDATE+50
----------
14/11/3385
1 row selected.
Of course, the database gets it date information from a call to the OS. So if the OS returns garbage it might be an issue, but that would be an OS bug that needs to be resolved.