Night flyers welcome neutral periods (6)
I believe the answer is:
months
'periods' is the definition.
(month is a kind of period)
'night flyers welcome neutral' is the wordplay.
I cannot quite see how this works, but
'neutral' could be 'n' (abbreviation in electronics) and 'n' is found within the answer.
The remaining letters 'moths' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for months that I've seen before include "17 and December" , "Divisions of year" , "Periods of time" , "Calendar divisions" , "Divisions of time" .)