December 24 2012 – Strange Sounds in the Sky, Valcea, Romania.
Inhabitants from different little towns of Romania (Rm.Valcea, Dragasani and Ocnele) reported some strange noises that apparently came from the sky on Christmas Eve (source)… These cities are tens of kilometers apart. Despite this distance, the sound was reported simultaneously by multiple people. The source of this sound remains unknown.
Strange Sounds in Romania, Christmas 2012:
Strange Sounds in Romania, July 2012