Crossword Genius

Strange things seen during dark periods (6)

Ross

I believe the answer is:

nights

I'm a little stuck... Click here to teach me more about this clue!

'dark periods' is the definition.
(I've seen this before)

'strange things' is the wordplay.
'strange' indicates an anagram.
'things' is an anagram of 'NIGHTS'.

'seen during' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for nights that I've seen before include "See 1" , "Times of darkness" , "Times after sunset" , "Periods of darkness" , "See 9" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).
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