Tuesday January 16, 1151
A date scroll with Latin text from β€œThe Extremes of Good and Evil” by Cicero, written in 45 BC.

January 16, 1151: Day of the Week

January 16, 1151 was the 16th day of the year 1151 in the Gregorian calendar. There were 349 days remaining until the end of the year. The day of the week was Tuesday.

The day of the week for January 16, 1151 under the old Julian calendar was Tuesday. 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 mardi.

A person born on this day will be 874 years old today. If that same person saved a Quarter every day starting at age 4, then by now that person has accumulated $79,483.25 today.

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Here’s the January 1151 Gregorian calendar. You can also browse the full year monthly 1151 calendar.

January 1151
SunMonTueWedThuFriSat
 123456
78910111213
14151617181920
21222324252627
28293031   

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Zodiac & Birthstone

Capricorn 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 16, 1151 by the Numbers

  • 319,394 days since January 16, 1151
  • 874 years, 5 months, and 20 days ago
  • 10,493 months since then
  • January 16 is in the 3rd week of the year 1151 (ISO 8601)
  • 45,627 weeks ago
  • The year 1151 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 16, 1151). 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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