Quenya 

árë

day

árë noun "day" (PM:127) or "sunlight" (SA:arien). Stem ári- _(PE17:126, where the word is further defined as "warmth, especially of the sun, sunlight"). Also name of tengwa #31; cf. also ar # 2. Originally pronounced ázë; when /z/ merged with /r/, the letter became superfluous and was given the new value ss, hence it was re-named essë (Appendix E)_. Also árë nuquerna *"árë reversed", name of tengwa #32, similar to normal árë but turned upside down (Appendix E). See also ilyázëa, ilyárëa under ilya. In the Etymologies, this word has a short initial vowel: arë pl. ari (AR1)