When Really?

I am a little confused with beginning and end

When did the year begin, and when did it end?

A beginning has come after a beginning’s end

Each day is a beginning and each day is an end.

From wherever you begin it is beginning my friend

And whenever you wish, you can bring in an end

I like many beginnings, many ends with a slant

I like brand new ends and I like fresh new starts

As long as I am breathing, I’ve just begun to live

To try, to push, to receive and to give

And making mistakes nobody’s made before

Day after day, forever and more

We’ve quantified the celestial sun and the Earth

We call it years and month for what it is worth

There’s fresh promise present in the cosmos without end

When did it all begin, and when will it truly end?