Qenya
illume
conjunction. when, whenever, at the time that
íqallume
adverb. when, whenever
ia
adverb. ever
man(an)
adverb. when
oi
adverb. ever
íqa
conjunction. when, whenever
íre
conjunction. when
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
The correlatives manan or man “when” appeared in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/109), a combination of interrogative ᴹQ. ma and ᴹQ. -n(an) “time”.
Neo-Quenya: For purposes of Neo-Quenya I would stick to ᴹQ. mallume, since I think -n(an) was abandoned.