When thinking about the concept of time one quickly come to think of clocks. And since I am Dutch I want to introduce you to a Dutch view on time and clocks.
Dutch artist Maarten Baas made a beautiful series of clocks. For our national airport Schiphol, he made a clock in which a working man can be seen painting the time minute by minute. See: http://maartenbaas.com/real-time/schiphol-clock/
He also made Real Time, Sweepers clock. A 12 hour video which can be used as clock. Genius. See: https://www.youtube.com/watch?v=SXNT4T56EmM
Of course you can see the whole video but when watching these hands of the clock moving time is reaaaallly slow. But in reality time goes very fast. Al of a sudden it's already the 15th of January. Only two weeks before our deadline. And since I am a slow starter, and thus someone with a huge final sprint, I just started with our prompt 'Time'. Have finished half the top by today.
As Albert Einstein I have my own relativity theory, or should I name it 'relatively theory': once if you have a lot of time, you spend a relatively large amount of time doing nothing. But, if you are running out of time, you will deal with your time much more relatively efficient.
So, whatever definition of time you use, I am busy using the time left.