Either way it's high time (4)
I believe the answer is:
noon
I believe this clue is a double definition.
'either way' is the first definition.
'high time' is the second definition.
(I've seen this in another clue)
'it's' is the link.
(Other definitions for noon that I've seen before include "Twelve o'clock in the day" , "when only mad dogs go out?" , "Twelve o'clock, midday" , "See 8" , "[LUNCHTIME] ?" .)