Easter Weekend Blue Moon Will Be The Last Until 2020

CBS Local — The last blue moon of the year is set to light up the sky this weekend. For sky watchers, it’ll be the final opportunity to see the rare lunar spectacle until 2020.
Blue moons typically occur every 2.7 years but this will be the second blue moon since January. A blue moon is the name given to the second full moon to appear in the same month. Accuweather says the next blue moon won’t be seen until Halloween of 2020.
“The term ‘blue moon’ actually ha