December 31st, 2021

December 31st, 2021, will fall on a Friday. It will be day 365 of 2021. The decade will be the 2020s.

Basic Facts

Basic facts and information about this date:

  • 8 months and 9 days will pass between now and December 31st, 2021.
  • Week Number: This date will occur during Week 52 of 2021.
  • Leap Year: 2021 is NOT a leap year.
  • Unix Timestamp: The Unix Timestamp for this date is 1640908800.

Horoscopes & Birthstone Information

Zodiac & Birthstone information:

  • Zodiac Sign (Astrology): Anyone born on December 31st, 2021, will have the star sign Capricorn.
  • However, if you are going by the new star sign system (2020), then the sign for this date is actually Sagittarius.
  • Zodiac Element: Earth.
  • Chinese Zodiac Animal: In the Chinese Zodiac, 2021 is the year of the Ox (Yin Wood).
  • Native American Zodiac: December 31st, 2021 falls under the Goose.
  • Birthstone: Anyone born during the month of December will have the birthstones Tanzanite, Zircon and Turquoise.

Celebrity Birthdays

Celebrities, historical figures and noteable people who were born on the 31st of December:


National holidays and famous events that fall on the 31st of December:

  • New Year's Eve

Conception Dates

Interesting facts about conception dates.

  • If your baby is due on December 31st, 2021, then the date of conception was probably around the 23rd of March, 2021. (Rough Estimate).
  • A baby that is conceived on December 31st, 2021, will be due on the 10th of October, 2022. (Rough Estimate).


A countdown timer for December 31st, 2021.

How old will I be?

Enter your date of birth below to find out how old you will be on December 31st, 2021.

Time Difference & Statistics

Here are some fun statistics about December 31st, 2021.

  • 253 days will pass between now and then.
  • 21,862,800 seconds will pass between now and December 31st, 2021.
  • Between now and then, your heart will beat 25,506,600 times.
  • Between now and December 31st, 2021, earth will travel approximately 11,281,204,800 miles through space.
  • Between now and then, your eyes will blink 3,643,800 times.
  • Between now and then, you will take 1,880,201 steps. That's about 836 miles!
  • 262,354 meteors will enter the earth's atmosphere between now and then!

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