query to find timezone (DST) version in oracle database 11.2.0.4?

Hello DBA's,

Use the below query to find daylight savings timezone version in the database. 

select * from v$timezone_file; 

Output :

SQL> select * from v$timezone_file;

timezlrg_18.dat              18

It shows that the database in version 18 and oracle home has been patched with DSTv18.