One Summer when I was very young, I recall thinking it went by REALLY fast, much faster than any of the other Summers I've been through. And what are other kids saying? The Summer went by REALLY fast. There were times in high school where people would say "wow, it's been a long week," and even before they said that, that's precisely what I was thinking; the week just felt so sluggish and slow.
Even little things, like how, even if you're in a group of friends that have done completely different things throughout the day, you ALL feel REALLY tired, even if during the SAME TIMES in PREVIOUS days, you all felt energetic/neutral. It seems as if feelings and emotions collectively spread based on conditions that we're, or maybe just I'm, not sure of. I don't know, stuff like this happens all the time and it's just very strange to me.