There’s a celestial show coming up this weekend and it’s one we won’t see again for another 19 years.
While it may not appear any different the full moon we’re going to see Saturday is going to be a rare sight.
A Blue Moon occurs when there are two full moons in one month. So far this year we’ve had full moons on January first, January 31st, March 1st and now March 31st.
The full moons on both January and March 31st are considered Blue Moons. But notice there were no full moons in the month of February.
A Blue Moon occurs once every few years. It’s rare to see two Blue Moons in one year. Full moons follow the 19 year Metonic cycle.
So the next time we will see two blue moons in one calendar year will be 19 years from now in 2037. After this weekend’s Blue Moon the next one will be in 2020 on Halloween.
The Blue Moon will rise this Saturday evening, March 31st around 8:19 p.m.