observance


observance (http://definr.com/observance)

     n 1: the act of observing; taking a patient look [syn: observation,
           watching]
     2: a formal event performed on a special occasion; "a ceremony
        commemorating Pearl Harbor" [syn: ceremony, ceremonial,
         ceremonial occasion]
     3: the act of noticing or paying attention; "he escaped the
        notice of the police" [syn: notice, observation]
     4: conformity with law or custom or practice etc. [syn: honoring]
        [ant: nonobservance]