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02/27/2020 – Ephemeris – Saturday is the intercalary day

27 Feb 2020, 19:20 UTC
02/27/2020 – Ephemeris – Saturday is the intercalary day
(200 words excerpt, click title or image to see full post)

Ephemeris for Thursday, February 27th. Today the Sun will be up for 11 hours and 2 minutes, setting at 6:27, and it will rise tomorrow at 7:22. The Moon, half way from new to first quarter, will set at 10:28 this evening.
Saturday we’re going to have one of those special days that only occur once every 4 years making this a leap year. It’s the intercalary day that compensates for the fact that the earth takes 365 and nearly a quarter day to orbit the Sun. That orbit is a year, and those quarter days are accumulated and added as the last day of February on years divisible by 4. The Gregorian reform makes a slight adjustment on most century years, making century years not divisible by 400 ordinary years to keep the calendar in sync with the seasons. The Romans, from who we’ve gotten our calendar considered the month of February as unlucky, and so they shortened it. Enjoy your extra day on Saturday.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

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