Dad and I used to call each other all the time, just to talk, or to share something interesting we'd discovered, orr just for no reason at all. He used to call me up and say, "So, are you watching the Curling match on TV?" Of course he knew I found grass growing to be a lot more exciting than a Curling match, but it was an excuse to call.
I know that not everyone has the best relationship with their parents. But, and I mean this from the bottom of my heart, if you have a father to call, I gently urge you to do so. Tell him you love him, if it's at all in your heart possible to do so, and wish him a happy Father's Day. You might never get that chance again, today may be your last opportunity, and someday you may find yourself wishing not only that you could, but that you had done it when you could.