Waiting the month from Thanksgiving to Christmas also took like half a year as a kid. If your birthday was in the summer, you'd be waiting a couple years for it. One school year felt like 3 or 4 years .
I'd say a year now feels about as long as 3 months did c. 10 years old. Summer rolls around and I blink and it's already getting too cold for the beach again.
People come up with various reasons for it, with a popular explanation being novelty or something, but I've had a bunch of very novel years and it never seemed to make a difference. It's just a little faster every year.
Kinda depressing to think that, by subjective perception of time, I'm likely already in the last 20% or so of my life.