aliturgical

From a- +‎ liturgical.

aliturgical (not comparable)

1. (of a day in the Christian calendar) On which the Eucharist is not offered.
   • 1950, A. Fortescue, The Mass:

     In the Byzantine rite, for instance, all weekdays of Lent except Saturdays and Maundy Thursday are aliturgical

• “aliturgical”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.