17 February 2016 (Inexplicata.blogspot.com)
Source: PLANETA UFO and Diari de Tarragona
(Date: 15 February 2016)
The article mentions a UFO incident that occurred at the El Prat Airport, Barcelona, on 21 May 1952:
http://inexplicata.blogspot.com/2016/02/spain-army-has-investigated-four-ufo.html
Map of Spain with Province of Tarragona highlighted
(wikimedia.org image)