It is difficult to write these words, but no, contrary to the rumors you've heard and memes you've seen on social media, there will not be a "Green Moon" in the sky tonight. The Earth's only moon, a desolate mass of rock hanging in the our orbit some 238,900 miles away from human civilization, does a lot of things. None of those, however, pertain to it turning green.
The timing of these rumors is very telling. Today is Friday, April 20, aka 4/20. This date signifies and valorizes the smoking of marijuana, which is typically green, much like tonight's supposedly rare moon. According to legend, this supposed moon only appears every 420 years. According to the memes, it occurs when "several planets" align, causing the moon to appear green for 90 minutes.