B737 FO EXCEEDED CREW MAX DUTY TIME.

Narrative

WHILE ON TRIP PAIRING ABCD; DAY #2; IRREGULAR OPS WERE IN PROGRESS BECAUSE OF AN ICE STORM. WE WERE RERTED AND REMAINED OVERNIGHT IN MCO INSTEAD OF ROC. OUR COMPANY HAD JUST INSTITUTED A NEW COMPUTER SYS. CREWS AND AIRPLANES WERE BEING RERTED EVERYWHERE ALONG WITH CREWS. WE WENT FROM MCO-PHL AND DEADHEADED FROM PHL-PIT AND MY CREW LEFT ME IN PIT. I WAS ADVISED BY SCHEDULING TO CONTINUE ON WITH MY ORIGINAL PAIRING. I PICKED UP A NEW CAPT AND FLT ATTENDANT CREW (PARTIALLY). WE KEPT WAITING FOR THE OTHER FLT ATTENDANTS TO ARRIVE. ABOUT THAT TIME WE GOT WORD TO CHANGE ACFT WITH ANOTHER CREW. SO BTWN PREFLTING SEVERAL ACFT; SWITCHING CREWS AND FLTS FROM MY ORIGINAL PAIRING; A WINTER STORM AND CHANGING CREWS; ACFT AND FLTS; I SIMPLY LOST TRACK OF TIME. PLUS; DUE TO VERY STRONG WINTER JET STREAM WINDS; THE LONG FLT TO PHX TOOK ALMOST ANOTHER HR THAN ORIGINALLY PROJECTED. THE PROB AROSE THROUGH IRREGULAR OPS. MANY VARIABLES COMPOUNDED BECAUSE OF THE ABOVE LISTED FACTORS; PLUS THE NEW CREW SCHEDULING COMPUTER INSTITUTED. I DISCOVERED THE CREW DUTY DAY PROB WHEN I STARTED ADDING UP MY TIME THE NEXT DAY ON THE LEG BACK. BETTER VIGILANCE ON MY PART AND CREW SCHEDULING; BAD WX AND COMPUTER CHANGEOVERS. BEING RERTED AND NOT HAVING A PRINTOUT DIDN'T HELP ME BE AWARE OF CREW DUTY PERIOD DURING PERIODS OF HIGH WORKLOAD.