They definitely go faster now that I've retired. Partly because the days are shorter since I get more sleep, but also because I largely do things I enjoy, so time doesn't drag as it did when I worked. Also, I can now concentrate on the thing I'm doing, without my brain racing away in the background thinking about all the other things I have to do that day/week/month. I'm more mindful now and time just seems to fly by. Maybe I'm "in the flow?"