Blue Moon 2020: How to see the rare Halloween lunar event – 7NEWS.com.au

This years Halloween is looking extra spooky with a rare lunar event set to light up the skies.
A Blue Moon – the origin of the popular idiom – occurs when two full moons land in one calendar month.
The phenomena happens about once every two or three years.
The lunar event will take place on October 31 for the first time in 19 years. Credit: Getty Images
But a Blue Moon on Halloween is a much rarer, and eerier, event.
For the first time in 19 years, stargazers will see a rare Blue Moon on O…

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