Full moon full moon on 15 Nisan of the Hebrew calendar. The date of the Jewish Rosh Hashana and Sukkot festivals along with all other Jewish holidays are dependent on the dates of the new moons. In lunisolar calendars, an intercalary month occurs seven times in the 19 years of the Metonic cycle, or on average every 2.7 years (19/7). In the Hebrew Calendar this is noted with a periodic extra month of Adar in the early spring. In the modern system of "traditional" full moon names tied to the solstice and equinox points, a supernumerary full moon in such a period
Full moon in the sky.) Thus, there is no long period of darkness between sunset and moonrise for several days after the full moon, thus lengthening the time in the evening when there is enough light for men to see to work to get the harvest in. The "Maine Farmers' Almanac" from c. the 1930s began to publish Native American "Indian" full moon names. The "Farmers' Almanac" (since 1955 published in Maine, but not the same publication as the "Maine Farmers' Almanac") continues to do so. An early list of "Indian month names" was published in 1918 by Daniel Carter Beard in