We are not the first to find that in these later years, time is speeding up. We find each month has its first day, the day of beginning, when we notice it is a new month. And, we notice when the days show we have arrived at the middle of the month. That tends to be it: first and middle. Then, it is the end just like that.
We used to find that the months had about 30 days but no longer. I read that the Roman emperor Augustus demanded that he have a month, August, with as many days as Julius and his July of 31 days. We do have calendars with 31 days in both of those months but consciously months these days have a beginning and a middle - that's it