Difference between CURRENT_DATE and SYSDATE

The difference between CURRENT_DATE and SYSDATE is:
CURRENT_DATE is the client’s time zone
SYSDATE is server’s time zone

i.e. if you are in London and your Oracle database server is in New York:
CURRENT_DATE: 02/01/2013 10:26:25
SYSDATE: 02/01/2013 05:26:25