Around 10pm a C-130 was clearly seen (and heard) overhead Arnhem. According to ADS-B Exchange, this was RCH1007 / 88-1302, an AC-130W. It was heading SSE, so a good guess is that it is either going to Ramstein or Spangdahlem. It is now flying over the Eifel. Nice if someone can confirm that the serial number is correct.
Best regards,
Bas