Sounds like there very likely was weather. Why did you wait until the very last day to respond to CEDR? The longer you wait the harder it is to get a flight history. If it matters sufficiently to you sign up for a premium account on flightradar24.com (I think there's a trial) and you should be able to see it (but need a sufficiently high account to go that far back as the Silver account only provides 90 days data)