December 21 is the Winter Solstice—the astronomical day when the Earth is farthest away from the Sun. Starting in ancient times, people celebrated the rebirth of the Sun event through Yule.

 December 25 is Christmas Day, a Christian holiday commemorating the birth of Jesus Christ.

The meaning of December stems from the Latin word decem, meaning ten. The old Roman calendar started in March, making December the tenth month. 

When the Roman senate changed the calendar in 153 BCE, the new year started in January, and December became the twelfth month.

Before December entered Old English, the names Ǣrra Gēola or Gēolmōnað, meaning “yule month,” were used. The early Germanic people referred to this wintry season as yuletide, a two-month period that spanned December and January

There are two December birth flowers: holly and narcissus. Each of these birth flowers has its own meanings and thrive during the month of December