The National Institute for Astronomical and Geophysical Research announced the occurrence of an astronomical phenomenon next Saturday, called “the blue moon”, in the sky of Cairo.
The full moon phase is completed twice in October:
The institute added in a statement on Thursday, and that the phenomenon is the occurrence of the full moon (i.e., the full moon phase) in the same month twice, as the month of Safar 1442 AH was completed and became full on October 1, and the month of Rabi’a al-Awwal 1442 AH was completed and becomes Beginning October 31, 2020.
The institute indicated that the moon will be blue in name only, an agreed definition only to distinguish it from the first full moon of the same month, and the last blue moon was on March 31, 2018.
And the institute continued: And this is another definition of the blue moon, it may also be the third among four full moons within one season, (where the season is between the solstice and the equinox).
The blue moon phenomenon:
He added that the next seasonal blue moon after October 31, 2020, is the moon of Muharram 1443 AH, which corresponds to August 22, 2021.
Regarding the phenomenon of the blue moon, which the moon will not appear in blue explicitly, but combines gray and pale white, but scientists chose blue to launch the phenomenon due to its scarcity and the scarcity of the moon’s appearance in blue
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