What song best explains "time" and "days?"?

NIght and Day, Ella Fitzgerald and Cole Porter

Times They Are a-Changin Bob Dylan

Turn, Turn, Turn sung by Judy Collins, by Pete Seeger, words from “Ecclesiastes.”

2525 Zagar & Evans
If I could put time in a bottle Jim Croce
Seasons in the sun Terry Jacks

@DrBill: The Croce song is lovely but on the link you posted there is only the instrumental.

Here is Croce both playing and singing.

There is a song about seasons, coming and going…

Those Were the Days by Mary Hopkin (1968)
Minute by Minute by the Doobie Brothers

Time Is On My Side – Rolling Stones
Time Has Come Today The Chambers Brothers

I hate this song but it fits what @MilkyWay said – Seasons in The Sun

Time Bowie
Time Clock of the heart Culture Club
These are the days of our lives Queen

Who Knows Where the Time Goes?

Time Music and Songs – Time Song List
http://www.popculturemadness.com/Music/Time.html

“The Best of Times” http://www.youtube.com/watch?v=c0vHWcg1M2c Styx

Let time go lightly, Harry Chapin

Or even better… Dreams go by… also by harry chapin

Time – Alan Parsons Project.

Yesterday – The Beatles

In my life – The Beatles

As time goes by

Old Man – Neil Young

Clocks – Coldplay.