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It's that time of the sidereal year where we take stock of what's been going on during the last orbit of Earth around the Sun.

Mrs. B. I must also explain to you what is meant by a sidereal year.

The length of time that it takes for the earth to arrive at the same position with respect to the stars, which is called a sidereal year, amounts to 365·2563744 days.

Unfortunately, here on planet Earth, with its decidedly undecimal sidereal year of 365-and-a-quarter days, that is just not going to happen.

Their sidereal year was 4�m too long,7 and they kept the ecliptic stationary among the stars, making no allowance for the shifting of the equinoxes.