Was, Is and Will
It is not a secret that this life we have consists of three categories and those categories are Was (it is the past), Is (it is the present day) and Will (it is the future). There is no secret for people in Was as we all know about our past, we are witnesses of that past, and there is also no secret for people in Is as it is the moment you have now.
Though, there is a secret for people in Will. See, there is such a though that Will is something we will never manage to catch up with. The closer we get to our Will the farer it goes. So, we have not a single chance to catch up with it or at least to look at it, as it is to far from us. Though, we all want to do that, moreover we are thirsty for it.
Our past is something that is gone and they will never be back again. Whet is done is done and we will never have a change to go back there and to fix something we would like to fix. Though, we would never refuse such an opportunity. No matter on the nature of the past it is our past and it is the history of our life, it is who we are and so it is extremely precious for us.
And the present day is a time you spend right now reading this lines, the next moment is a future. See, future comes into our life and replaces present day and the very moment future comes, present day is gone and it is a past now. So, there is no present day from this point of view. But still, people are interested in future most of all and they are looking for the way to find out more about it.