What is time? (60 second version for challenge)

What is time?
How did it get thought up?
I'm not sure,
but I'm glad we have it.

How would we know
when we must
do something,
and when we need
to go somewhere?

I'm grateful that
we have time,
It's weird but I do!

Author's Notes/Comments: 

A 60 second challange entry for ssmoothie's contest!

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