The last full moon of 2019 completes the first decade in the new millennium, and it will peak at 12:12 on 12/12, EST. All these twelves are significant in many ways. Here are a few that come to mind:
There are 12 months in a year, and December is the 12th month of the year. Time is often measured in two 12-hour periods signifyling the split between night and day. Twelve is a symbol of cosmic order, and the number of space and time.
The are 12 animals in the Chinese zodiac, and 12 signs in the Zodiac. There are Twelve Tribes of Israel, and Jacob had twelve sons who are considered the ancestors of the Twelve Tribes of Israel. When a Jewish girl turns 12 she becomes Bat Mitzvah. There are normally 12 jurors on a jury in the US.
In numerology, the number 12 is related to perfection, harmony, motivation, achievement, independence and completion. There are the 12 days of Christmas. The Flag of the European Union has 12 stars, and 12 people have walked on the moon.
Finally, 12 is considered the perfect number because there are 4 elements, 4 corners of the earth, and 4 cardinal points. Three is considered the sacred number of God; therefore, when the 4 elements, the 4 corners and the 4 cardinal points are multiplied as 4 x 3, the result, 12, is the perfect number.