Thursday December 13, 1038
A date scroll with Latin text from โ€œThe Extremes of Good and Evilโ€ by Cicero, written in 45 BC.

December 13, 1038: Day of the Week

December 13, 1038 was the 347th day of the year 1038 in the Gregorian calendar. There were 18 days remaining until the end of the year. The day of the week was Thursday.

The day of the week for December 13, 1038 under the old Julian calendar was Wednesday. Did you notice the difference with the Gregorian calendar?

If you are trying to learn Spanish then this day of the week in Spanish is jueves.

A person born on this day will be 986 years old today. If that same person saved a Quarter every day starting at age 6, then by now that person has accumulated $89,501.50 today.

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Here’s the December 1038 Gregorian calendar. You can also browse the full year monthly 1038 calendar.

December 1038
SunMonTueWedThuFriSat
      1
2345678
9101112131415
16171819202122
23242526272829
3031     

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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 13, 1038 by the Numbers

  • 360,198 days since December 13, 1038
  • 986 years, 2 months, and 6 days ago
  • 11,834 months since then
  • December 13 is in the 50th week of the year 1038 (ISO 8601)
  • 51,456 weeks ago
  • The year 1038 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 13, 1038). 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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