Blue Moon North Fife

Blue Moon over Dundee this evening. An event that happens once every, It's when there are two full moons in one month. "Blue moon" is a nickname for the second full moon in a month.
Full moons happen about every 29.53 days (the precise average period is 29.53059 days,but it's not always that exact interval because there are variations through the year' as the Earth-moon distance, Earth-sun distance, and sun-moon distance change)So you'll get a blue moon in a 31-day month if and only if the first full moon occurs less than 1.47 days into the month, which'll happen, on average, 1.47 / 31 of the time... or about 5% of 31-day months.
Similarly, in a 30-day month you get a blue moon every .47/30, or 1.5%.
These chances work out to a blue moon every 19 months, on average. It varies widely, however, and you can have several years without a blue moon at times.
You can't ever have a blue moon in February, since at most it has 29 days.

Partial eclipse, see a nibble out of the disc at 4 to 5 o'clock.