Time seems to go after as one grows older

Times seems to go faster with age or so it seemed to me. Last week has been a bit slower, may be due to efforts to cut down smoking. It seemed ages but is only about six days that I am down to six cigarettes a day. Today, we went to watch Leila and Ava aged 11,9 on their Athletics Day at school. It was about 12C, drizzling and sometimes pouring, and windy. We went around the ground twice meeting the kids twice, watced one of them run, spoke to them and offered gloves and caps which were refused. After what seemed like a long time, we were resigned to kids getting sick by the end of the day and Lalita already planning to ask Gavin to stay home the next day. Then we checked our watches and found that we spent exactly 18 minutes at the ground. I googled and the first item I find is this Why does time fly as we get older?