When I started teaching college classes, I measured time in quarters. This time it was an academic quarter that dominated my view of time. I was always looking at things from a ten-week perspective. Then we moved to semesters, and my view of time changed again. Now I measure time in terms of band contests. A new band takes the field every fifteen minutes at contests, so that is how I have come to view time, in fifteen-minute increments. It has become a countdown until our band takes the field and I get to watch my son, along with a gaggle of other band kids, go out and perform hard for fifteen minutes. That idea made me realize that we measure time by what's important to us.
Time can speed up or slow down or even freeze, not usually in a good way. The good and the bad are usually over before we know it. The actual amount of time never changes. Each minute is sixty seconds for all of us. But I think many of us (most?) get so caught up in measuring our time that we forget how little of it we actually get. Maybe we need to be in the moment more instead of trying to measure how much time something is going to take.