I have my ADSB local server page set to sort reports by distance, furthest first.
Interestingly, PiAware reported an aircraft over 3,000 miles away!
Zooming the map out it showed what it said was an RAF aircraft off the west coast of Africa. Had Tail Number etc etc.
From my younger days with FM, I believe atmospherics (“bouncing off clouds” etc) can lead to anomalies like this.
I assume the same goes for ADS-B?
(NB - How does one review older / all reported records? Realted, as I’d like to look back over this record, have also noticed a few other interesting (clearly personalized) ID’s recently).