A rumor making the rounds on social media claims we will observe a very rare "green moon" in April or May. The rumor claims the appearance of a green moon in the night sky on April 20, 2016, or on May 29, 2016, will be the first time the lunar phenomenon has been observed since 1847, that is, 420 years ago.
The rumor has gone viral on social media since it first emerged last month on Facebook. Many Facebook users reportedly appear to believe that a "green moon" will actually be visible in the night sky sometime this month, or late next month.
But online fact-checking websites such as Snopes and the astronomy website EarthSky have debunked the rumor, noting it is just another urban legend.
According to astronomers, we will not observe a green moon in the sky on April 20, or on May 29, 2016, as the viral rumor claims.