From the Chassidic Masters

Nissan is the first month, but it comes six months after the beginning of the year; Rosh Hashanah is the first day of the year, but it falls in the seventh month. Makes sense? It does, if you’re a Jew.

On the essence of lunar time.

"Creation" (beriah, in the Hebrew), which means bringing something into being out of a prior state of non-existence, implies a "before" and "after"; so to say that G-d created anything is also to say that He first (or simultaneously) created time...