A few corrections:
1. The Solar year is closer to 365.24 days. This is why the Julian calendar got out of whack, and why they had to prepare the Gregorian calendar. One extra day added every 4 years to February (same as Julian)
But... You don't do it if the year is divisible by 100, unless it's also divisible by 400.
That comes out to an error of somewhat less than one day in 3300 years. Not bad, but there are better ones. The ancient Mayan, for example.
2. The Earth's rotation is being slowed by tidal forces from the moon. It's a very tiny amount, but noticeable over millions of years. Eventually, the Earth's rotation will synchronize with the Moon's revolution (and the Moon's rotation, which is already almost synchronized with its revolution) The Earth will then retain that rotational speed. Since the Earth is slowing by about 3.2 milliseconds per century, it suggests that the synchronization will take place about 756,000,000 years from now, at which time the environment will be very different. Minnesota,after 29.5 days of winter solstice night, is a chilling thought.
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