Monday November 23, 1581
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

November 23, 1581: Day of the Week

November 23, 1581 was the 327th day of the year 1581 in the Gregorian calendar. There were 38 days remaining until the end of the year. The day of the week was Monday.

The day of the week for November 23, 1581 under the old Julian calendar was Thursday. Did you notice the difference with the Gregorian calendar?

If you are trying to learn Japanese then this day of the week in Japanese is Getsuyōbi.

A person born on this day will be 443 years old today. If that same person saved a Cent every day starting at age 4, then by now that person has accumulated $1,604.23 today.

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Here’s the November 1581 Gregorian calendar. You can also browse the full year monthly 1581 calendar.

November 1581
SunMonTueWedThuFriSat
1234567
891011121314
15161718192021
22232425262728
2930     

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Zodiac & Birthstone

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

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November 23, 1581 by the Numbers

  • 161,884 days since November 23, 1581
  • 443 years, 2 months, and 20 days ago
  • 5,318 months since then
  • November 23 is in the 48th week of the year 1581 (ISO 8601)
  • 23,126 weeks ago
  • The year 1581 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 (November 23, 1581). 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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