Times of Arrivals of 747s Into KIAD on Saturdays?

I wanna take my daughter out to Dulles tomorrow (May 12th) for some airplane spotting fun, and I’d like to see a lot of jumbos coming in. I was wondering if one of the fine folks on the FA staff could do a little computer voodoo and come up with a list of 747 arrival times from last Saturday (May 5th). Armed with that information, I can plan the day better and go there at the time of the highest concentration of 747 traffic there.

Thanks in advance… :smiley:

Times are UTC

 UAL898  | B744         | 2007-05-05 22:46:00
 DLH418  | B744         | 2007-05-05 19:39:00
 UAL917  | B744         | 2007-05-05 18:56:00
 UAL898  | B744         | 2007-05-05 17:49:00
 BAW217  | B744         | 2007-05-05 17:24:00
 KAL93   | B744         | 2007-05-05 15:46:00

Thanks a lot!