Quenya 

ar

day

ar (2) noun "day" (PE17:148), apparently short for árë, occurring in the names of the Valinorean week listed below. Tolkien indicated that ar in these names could also be arë when the following element begins in a consonant (VT45:27). Usually the word for "day" in LotR-style Quenya is rather aurë (or ), q.v.