[CentOS-mirror] How to tell age of mirror

Wed Nov 30 16:07:47 UTC 2011
Jim Kusznir <jkusznir at gmail.com>

Hi all:

I know CentOS runs a web site that checks the mirror age.  I'm curious
as to how it checks that so that I can check myself locally and verify
the age of any upstream mirror I'm pulling from.  How can I check the
age of my mirror locally without depending on the crawler?