That my be true where you live, but not here, so I disagree with you. Seasons don't appear to be shifting clockwise a bit, but disappearing slowly. We used to have four seasons and that was the case for years. Now we have 3 as spring is one week if we're lucky, or two. This is terrible for agriculture as we start late most of the time due to cold and then one day you have 5 degrees, the next day you have 20. This is when all your seedlings get burnt because they didn't have time to get used to strong sun.
Summer is not longer, ends when it used to end and then we have a long autumn, and a very mild winter, that slowly can be qualified as autumn, if we continue like this.