We've all heard that expression, right?

But do you know what a Blue Moon is?

A Blue Moon is the second full moon in the same month. While this is a rare occurance, it has already happened once this year, in January, and will happen again this month!

On March 31st, we will have another Blue Moon...the second full moon in the month of March.

So remember, on Wednesday evening, March 31st, go outside and enjoy the Blue Moon.

Because...there won't be another one until November 30, 2001.

And, we won't have another double Blue Moon year until 2018!

Did you miss it? Well, take heart, there are more coming up. Here's a schedule for the next dozen.