No time in Arctic to stray around (5)

I believe the answer is:

circa

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'around' is the definition.
(circa means around or approximately)

I cannot understand how the rest of the clue works.

(Other definitions for circa that I've seen before include "Preposition meaning about, usually preceding a date" , "Around (Latin)" , "Roughly" , "About (regarding dates)" , "Approximately (of a year)" .)

I've seen this clue in The Telegraph.

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