The pilot that submits the most battles in a month (as long as its more then 3), gets an IS-PR, second most (more then 3) gets an IS-GR. Same goes with missions, except with IS-GR and SR.
IS-PR to 1st, IS-GR second
Competition runtime starts on the first day at 00:00:01 UTC, and ends on the last day at 23:59:59 UTC.