11 November
n 1: the feast of Saint Martin; a quarter day in Scotland [syn:
{Martinmas}, {St Martin's Day}, {11 November}]
From WordNet (r) 3.0 (2006) [wn]:
17 November
n
a Marxist-Leninist terrorist organization in Greece that is
violently opposed to imperialism and capitalism and NATO and the United States; an active terrorist group during the 1980s Synonym(s):Revolutionary Organization 17 November, 17 November