How to accurately test if timezone data is updated?

[santhosh.mtech]

Dear Sir,

I updated JRE 1.5.0_13 with the newly released tzupdater version. The
output of the command:

#java -jar tzupdater.jar -V

tzupdater version 1.3.0-b01
JRE time zone data version: tzdata2007h
Embedded time zone data version: tzdata2007h

Even through it shows that the tzdata used by JRE is updated, I was
interested to know if there is any other method that can
systematically find out if the timezone data is updated eg. By
displaying the date of a country that uses DST whose details have been
newly updated by tzupdate.

Thank you for investing your precious time to read this message.

With regards,
Santhoshkumar.
(e-mail address removed)