Administrative defined Scans not running

Hi , 

i am using SEP 14 and  I have created a new rule (virus and spyware) iand also assigned it to the the group which i have defined administrative scan schedule to run daily at 10 am .

But on the next day when i run scan report it shows scanning not running at 10 am .Most of the users come to office at 9 am so i think it should work but its not working.Its running scan on different time slots for e.g 12 pm , 1 pm even 8 :00 am .... what might be the issue.

Please help me out