A blue moon can also occur in December of one year and March of the next year. In the intervening month of February, however, there is no full moon. For further information, please see the links provided below. Full Moon Observations 1999 (January-March) Eastern Standard Time (EST) Universal Time (UTC) 9:51 p.m. on January 1 02:51 a.m. on January 2nd 11:08 a.m. on January 31 31 January, 16:08 p.m. on February 28th 28 February, 7:44 a.m. on March 2nd 3:44 p.m. on March 3rd.
A double blue moon is most often in January/March, although it can also happen in January/April or January/May, and only when there is no full moon in February.
The term "blue moon" comes from the idea that if you look at the moon on two consecutive nights, then one of those nights will be black with a shadow of Earth blocking out the sun. The third night will have three parts: a part that is dark like any other night, a part that is bright like a full moon, and a bit of twilight between.
The first blue moon was on January 31, 1866 (or 1566 GMT), and there were more than six months until the next one. The most recent blue moon was on January 5, 2009 (or 0600 GMT). There will be another blue moon on January 3, 2010 (or 0300 GMT).
The average interval between blue moons is about four years. But because of variations in the length of the lunar orbit, there are times when it can be as short as three years and as long as five.
A second example in addition to the current moon is shown in old photographs of Antarctica taken in early the 20th century.
(This was the case in 2018, when there were blue moons in both January and March but no full moon in February.) This will not happen again until 2037, when there will be a Blue Moon in both January and March. Do you want to know more about the moon? Check out the Almanac's Moon Phase and Full Moon Calendars!
The term "blue moon" refers to when it happens twice in one month. If it is a clear night with no clouds in sight, someone watching the moon for you can see it become up around the time the sun begins to rise and then gradually disappear below the horizon. The next morning at sunrise you would see it again.
Only three months of 2018 had a blue moon: January had 2, March had 1. In general, only five months out of every year have a blue moon: January, April, July, October, and November. The other years do not match up with these days on the calendar; instead, they have either two or three regular moons. There are several types of moons that can occur including half-moons, crescent moons, and red moons.
Half-moons appear slightly less than half full and give an idea of what kind of weather we might expect during the following week. Half-moons usually come along around late June or early July and represent the beginning of the hot season.