The blue moon is going to appear this week and the watchers are all excited and as per NASA this time the moon isn’t going to be a regular full moon as it will actually be a blue moon. But remember, the moon is actually is not going to be blue in color. So, do not expect the moon to be blue. The reason behind we calls it the blue moon is that when there are two full moons in a single month calendar, then it is called the blue moon. Such an incident takes place in every 2.5 years, according to NASA. Another definition of the blue moon can be said that when there are four full moons in one season as the definition was obtained back in the year 1528.
Astronomical spring (in the Northern Hemisphere) runs from the spring equinox on March 20 to the summer solstice on June 21.
During that time frame there will be four full moons:
1. March 20 (worm moon)
2. April 19 (pink moon)
3. May 18 (flower moon and blue moon)
4. June 17 (strawberry moon)
Because of the strawberry moon which appears before the time when the sun is farthest from the celestial equator which is also called solstice, makes four moons in the spring season due to which, this weekend’s moon is being called the blue moon. As per the astronomers from the EarthSky, the last seasonal Blue Moon appeared on 21 May 2016. The moon is going to rise fully on the afternoon of Saturday at 4:12 p.m. CDT and will appear from Friday night to the whole weekend. According to National Weather, the next blue moon is going to come out during Holloween in the year 2020. The blue moon has other nicknames given by the native Americans back in the 1930s as they use to call every month’s full moon with different nicknames.