The events of 2020 were strange enough that some would laugh that they will only happen once in a blue moon. But this year will see even one of these: At the end of October, a true and rare blue moon will occur – this Halloween, this year, October has two full moons. On October 1st or 2nd (depending on which time zone you’re in), Harvest Moon, the closest moon to the autumnal equinox, gave us when the length of day and night are equal. This usually occurs in September but progresses until October of this year. Also known as the whole corn moon or barley moon in some parts of America, farmers have traditionally used its light to gather for crops until late at night before winter arrives. This year’s Harvest Moon was also the hunter’s moon, again named the rural practices, this time for pollinated animal hunting in summer under the moonlight, which is brighter and Stay longer At this time of year. However, the 2020 Harvest Moon is a miniature full moon, given that it is smaller than usual. The second full moon in any month is known as a blue moon. There are seven every 19 years. The name is a placeholder, given in order to keep other full year moons in place. This is because the moon completes 12 full revolutions of its phase in 354 days, less than 11 days of the full solar calendar year of 365 days. This year is particularly unusual because it is the first full moon to occur in all time zones since 1944, even though there is a Halloween full moon somewhere in the world every 19 years – meaning that the next moon that will happen will be in 2039, followed by it. By 2058 and 2077. Some traditions are complete third the moon In a sidereal season with four full moons like a blue moon. Either way, the extra moon is a way to reconcile the solar and lunar calendars, like the additional month of Adar II in the Jewish calendar, which also occurs seven times in a 19-year cycle. In Jerusalem, Harvest Moon happened on October 2 at midnight with five minutes. The blue moon will occur on October 31 at 4:49 PM