Intel galileo Iot-kit agent problem

Hello all,
      I have intel galileo board, I want to install iot-kit agent in it. but each and every time when I reboot my board I have to execute below command to change the date.

                date -s "$(curl -s --head http://google.com | grep ^Date: | sed 's/Date: //g')"

How to change this date permanently??
Please give me some solution

Thanx
kishan kakkad