Sunday December 15, 1107
A date scroll with Latin text from โ€œThe Extremes of Good and Evilโ€ by Cicero, written in 45 BC.

December 15, 1107: Day of the Week

December 15, 1107 was the 349th day of the year 1107 in the Gregorian calendar. There were 16 days remaining until the end of the year. The day of the week was Sunday.

The day of the week for December 15, 1107 under the old Julian calendar was Sunday. 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 dimanche.

A person born on this day will be 917 years old today. If that same person saved a Half dollar every day starting at age 4, then by now that person has accumulated $166,767.00 today.

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Here’s the December 1107 Gregorian calendar. You can also browse the full year monthly 1107 calendar.

December 1107
SunMonTueWedThuFriSat
1234567
891011121314
15161718192021
22232425262728
293031    

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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 15, 1107 by the Numbers

  • 334,995 days since December 15, 1107
  • 917 years, 2 months, and 4 days ago
  • 11,006 months since then
  • December 15 is in the 50th week of the year 1107 (ISO 8601)
  • 47,856 weeks ago
  • The year 1107 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 15, 1107). 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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