Quenya 

hyárë

this day

hyárë noun used as adv. (older hyázë) "this day", a form Tolkien apparently abandoned in favour of síra, q.v. (VT43:18)

hyárë

noun/adverb. *today, this day

siar

this day

siar, siarë adv. "this day", a form Tolkien apparently abandoned in favour of síra, q.v. (VT43:18)

siar(ë)

noun/adverb. *today, this day

síra

this day

síra compound noun "this day", used = *"today" as adverb (VT43:18)

síra

noun/adverb. *today, this day