Derivatively, today's his day (5)

I believe the answer is:

woden

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'derivatively today's his day' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

This is the entire clue.

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(Other definitions for woden that I've seen before include "Foremost Anglo-Saxon god" , "godlike figure" , "Norse god" , "Odin" .)

I've seen this clue in the Evening Standard.

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