Get Current Time or Date of an Oracle DB

Note: This is on Oracle DB

To get the server Date:
SELECT sysdate FROM dual;
This will give you the system date in this format, Ex: 18-AUG-09

To get the server TimeZone:
SELECT sessiontimezone FROM dual;
This will give you the system timezone in this format, Ex: Asia/Calcutta

To get the server time:
SELECT systimestamp FROM dual;
This will give you the system time in this format,
Ex: 18-AUG-09 04.49.43.648480000 AM -07:00