Finding a track...

How would I find the track of a flight that did a HUGE 360 over San Luis Obispo CA at noon today (3/19)?? A large 4 engine contrail was heading northbound, did a right decending 360 and disappeared directly over KSBP. Wasn’t home at the time and can’t seem to find anything on my own here… a little help?? We do have a large military rwy 40 miles sw of here- poss. military diversion?

PS- My apologies for repeating what I wrote in the A-380 post… That was my original thought and I have since ruled that out / gotten no other suggestions so I thought I’d go big…