Friday February 20, 1531
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

February 20, 1531: Day of the Week

February 20, 1531 was the 51st day of the year 1531 in the Gregorian calendar. There were 314 days remaining until the end of the year. The day of the week was Friday.

The day of the week for February 20, 1531 under the old Julian calendar was Monday. 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 viernes.

A person born on this day will be 494 years old today. If that same person saved a Dime every day starting at age 7, then by now that person has accumulated $17,799.30 today.

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Here’s the February 1531 Gregorian calendar. You can also browse the full year monthly 1531 calendar.

February 1531
SunMonTueWedThuFriSat
1234567
891011121314
15161718192021
22232425262728

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Zodiac & Birthstone

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

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February 20, 1531 by the Numbers

  • 180,550 days since February 20, 1531
  • 494 years, 3 months, and 30 days ago
  • 5,931 months since then
  • February 20 is in the 8th week of the year 1531 (ISO 8601)
  • 25,792 weeks ago
  • The year 1531 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 (February 20, 1531). 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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