Thursday January 29, 1091
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

January 29, 1091: Day of the Week

January 29, 1091 was the 29th day of the year 1091 in the Gregorian calendar. There were 336 days remaining until the end of the year. The day of the week was Thursday.

The day of the week for January 29, 1091 under the old Julian calendar was Wednesday. Did you notice the difference with the Gregorian calendar?

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

A person born on this day will be 934 years old today. If that same person saved a dollar every day starting at age 5, then by now that person has accumulated $339,332.00 today.

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Here’s the January 1091 Gregorian calendar. You can also browse the full year monthly 1091 calendar.

January 1091
SunMonTueWedThuFriSat
    123
45678910
11121314151617
18192021222324
25262728293031

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Zodiac & Birthstone

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

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January 29, 1091 by the Numbers

  • 341,158 days since January 29, 1091
  • 934 years, 0 month, and 21 days ago
  • 11,208 months since then
  • January 29 is in the 5th week of the year 1091 (ISO 8601)
  • 48,736 weeks ago
  • The year 1091 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 (January 29, 1091). 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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