calendry

noun3

1. •
   The calculation and development of calendars, especially the determination of the timing of astronomical movements.

   • It attained to cities, kingdoms, most metallurgical arts, some astronomy and calendry, and extraordinarily complex rituals. — 1948
2. •
   A specialized calendar or set of calendars.

   • He will not again decorate his room with cheap prints and art calendry. — 1947
3. •
   A place set aside for calendering.

   • And over these is spread a calendry, resembling a tent, made of wax-cloth, or oil-cloth, to defend them from rain and the heat of the sun. — 1783