Use rdate

for chicago use

rdate -s 132.236.56.250

in case there is no internet connection get the output from the following command

date +DONEm%d%k%M.%S 
and on openwrt use date -s mmddkkMMYYYY.SS replacing the date string with the output of the command used above 

-- AmitaEkbote - 25 Sep 2009

 
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