Historians theorise that Night of the Bonfires was on 16th December but there is no evidence of it's date. This was the night when England declared war on Bulgaria. As we do not know many solid facts about this era, all of this is speculation. The name 'Night of the Bonfires' was given to this night as when the English Air Fleet. The first warning Bulgaria got was when several lights appeared in the sky from the Bulgarian scout ships who had spotted the English Fleet.