In exactly a month, if we are lucky and there is no thick cloud cover, we may have a chance to see a blood moon once again, as the 'largest lunar eclipse this century' is expected to be witnessed on July 27, 2018.
The moon is called the blood moon because of the red colour of the moon seen by people. It happens because, when the sunlight enters Earth’s atmosphere which is blocking, the light gets refracted in such a way that the green to violet wavelengths on the visible spectrum scatter more strongly than the red, thus giving the moon a reddish colour.
It's a golden chance to see this event.