Discussing: Stealing Nimloth's fruit
Re: Stealing Nimloth's fruit
I happened to have HoME XII and UT open, and with the encyclopedia of Arda I can see the following (potential) timelines:
3209 Possible birthdate of Isildur
3261Sauron is brought to Numenor
3310 Ar-Pharazon began planning to assail the Valar at the encouragement of Sauron.
3319 Downfall of Numenor
The persecution of the elf-friends had started by the time Isildur stole the fruit; and the King was under Sauron's sway; the temple is built and the wood of Nimloth is the first offered on the alter as they began to worship him. So I think its a take your pick - anytime maybe right before 3310?
Although you could probably make it suit your purposes regardless.

Not of much help,
Nilmandra