Friday December 11, 1142
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

December 11, 1142: Day of the Week

December 11, 1142 was the 345th day of the year 1142 in the Gregorian calendar. There were 20 days remaining until the end of the year. The day of the week was Friday.

The day of the week for December 11, 1142 under the old Julian calendar was Friday. Did you notice the similarity with the Gregorian calendar?

If you are trying to learn French then this day of the week in French is vendredi.

A person born on this day will be 881 years old today. If that same person saved a Dime every day starting at age 6, then by now that person has accumulated $31,994.60 today.

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Here’s the December 1142 Gregorian calendar. You can also browse the full year monthly 1142 calendar.

December 1142
SunMonTueWedThuFriSat
  12345
6789101112
13141516171819
20212223242526
2728293031  

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Zodiac & Birthstone

Sagittarius is the zodiac sign of a person born on this day. Turquoise is the modern birthstone for this month. Onyx is the mystical birthstone from Tibetan origin that dates back over a thousand years.

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December 11, 1142 by the Numbers

  • 322,138 days since December 11, 1142
  • 881 years, 11 months, and 23 days ago
  • 10,583 months since then
  • December 11 is in the 50th week of the year 1142 (ISO 8601)
  • 46,019 weeks ago
  • The year 1142 is not a leap year

Gregorian versus the old Julian calendar

A note to students, teachers, scholars and anyone else passionate about this topic. As stated in the front page, this website is using the Gregorian calendar as the basis for all “day of the week” computation whether or not the Gregorian calendar is relevant for the date in question (December 11, 1142). Educators should point out the primary reason why Pope Gregory XIII introduced a new calendar system in October 1582. That is, to make the computation for the annual date of Easter more accurate since it is the foundation of the Christian faith.

Even with that purpose in mind, the Gregorian calendar too will become out of sync. It has a known approximation error of about one day for every 7,700 years assuming a constant time interval between vernal equinoxes (which is not true). This is better compared to the one day for every 128 years error of the Julian calendar.

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