Please take a look at the sentence
I saw john the other day
I know the meaning of "the other day" But is it a object (noun phrase). because "day" is a noun,"other" is adjective, and "the" is article. So i think it could be a object (noun phrase)
But the other day is just similar to every day which is an adverb
I see him everyday
I runs everyday
I think everyday is adverb here because it describing the verb. Similarly in first sentence "the other day" also works in same way.
So in first sentence what is "the other day" ? is it a object(noun phrase) or an adverb ?