iptable time module following incorrect time

["J. Bakshi" <bakshi12@gmail.com>]

Hello,

I have the following to block facebook during 9 AM to 6 PM

``````````````
iptables -I FORWARD -p tcp -m multiport --dport 80,443 -d 69.171.224.0/19  -m time \
              --timestart 09:00 --timestop 18:00 -j REJECT
`````````````

But the time scheduled is followed incorrectly. The stat time activated at 1 PM and the stop time
at 23 PM. What is the wrong with time module ? The server timezone is set to Asia/Kolkata

Thanks