Is it common to omit a preposition (in / on / of) before “the month (year / week /day) when they are used adjectively and adverbially?

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Chapters
00:00 Is It Common To Omit A Preposition (In / On / Of) Before “The Month (Year / Week /Day) When They Are
01:13 Accepted Answer Score 14
02:51 Thank you

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