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Now I know there was month with no full moon but has there ever been a month with 2 full moons?

April 26, 2017Astronomy Mathematics month moon

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Now I know there was month with no full moon but has there ever been a month with 2 full moons?

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Quick answer: 1) There have been many months (always February) with no full moon (but February 1845 wasn’t one of them). 2) There are many months with two full moons. It happens on the average every 33.6 months. Long answer: First, you have to keep in mind that the month of a full moon depends on your time zone, so it could happen that there are two full moons in a month in London but not in San Francisco, or vice versa. (For instance, if a full moon occurs at 6 AM UT on December 1 in London, it occurs in San Francisco at 10 PM PST on November 30.) I’ll use Universal Time for the following calculations. Here are the months of February between 1900 and 2099 without a full moon: 1934 1961 1999 2018 2037 2067 2094 It’s not common, but it’s not all that rare. The next month with two full moons is December 2009. See http://aa.usno.navy.mil/data/docs/MoonPh… The reason for this is that the average time between full