2007 day light savings time question

[mcclnx mcc]

I look Redhat 2007 day light savings time document and
it mention update tzdata package to at least
"tzdata-2005m-1.EL3.noarch.rpm" then run
"system-config-date" to update timezone in
/etc/localtime.

I can NOT found "system-config-date" in anywhere. 
Does anyone know where it is?

Thanks.

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