winya (1) adj. "new, fresh, young" _(VT45:16; though the entry including this form was struck out in the Etymologies, _vinya "new" is a valid word in Tolkien's later Quenya, and it is meant to represent older winya. Compare winyamo, q.v.)
Quenya
Narvinyë
january
winya
new, fresh, young
avestalis
january
avestalis noun "January" (LT1:252; LotR-style Quenya has Narvinyë)
sinya
new
sinya adj. "new" (SI)
asta
month
asta (1) noun "month", a division of the year (VT42:20). Pl. astar is attested (Appendix D). According to VT48:11, the basic meaning of asta is "division, a part", especially one of other equal parts: "of the year, a month or period". According to VT48:19, asta is also used in Quenya as a group suffix (see quentasta).
Narvinyë noun first month of the year, "January". The word seems to mean "New Fire/Sun". (Appendix D)