How can I set the timezone on my Sentry self-setting atomic clock?

Many Sentry product manuals can be down loaded from the following URL
http://www.sentryindustries.com/support/manuals.asp
The instructions for Sentry CR104 is located at the following URL
http://www.sentryindustries.com/pdf/instructions/CR104_instructions.pdf
I have noticed sometimes the instructions tell you to use the ADJUST key.
If that does not work try the SET key sometimes it will work instead of the ADJUST key.

The clock will set itself at specific time set times, this is likely to be at 0200 0400 and 0600.
You will however be required to set the time zone, the switch is likely to be on the back.

INFO:
Atomic Time Synchronisation:
How does it work.
SHORT VERSION:
Radio set clocks and watches receive a 60-kilohertz, radio signal from the NIST the official timekeeper for the US and is located in Boulder, Colorado. Ft. Collins. they use atomic clocks and transmits this official time via high frequency short-wave and low frequency AM radio signals, satellite transmission, Internet, and via telephone.


REFERANCE LINKS:
OFFICAL TIME:
http://www.time.gov/timezone.cgi?Eastern/d/-5/java
PHOTO OF ANTANA TRANSMITTERS:
http://tf.nist.gov/stations/wwvb.htm