definition of
observance

[1] #1 observance n. [observation, watching] the act of observing; taking a patient look. wn

[2] #2 observance n. [ceremony, ceremonial, ceremonial occasion] a formal event performed on a special occasion; "a ceremony commemorating Pearl Harbor". wn

[3] #3 observance n. [notice, observation] the act of noticing or paying attention; "he escaped the notice of the police". wn

[4] #4 observance n. [honoring] conformity with law or custom or practice etc.. wn