Thursday May 20, 1143
A date scroll with Latin text from โ€œThe Extremes of Good and Evilโ€ by Cicero, written in 45 BC.

May 20, 1143: Day of the Week

May 20, 1143 was the 140th day of the year 1143 in the Gregorian calendar. There were 225 days remaining until the end of the year. The day of the week was Thursday.

The day of the week for May 20, 1143 under the old Julian calendar was Thursday. Did you notice the similarity 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 881 years old today. If that same person saved a Nickel every day starting at age 6, then by now that person has accumulated $15,996.25 today.

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Here’s the May 1143 Gregorian calendar. You can also browse the full year monthly 1143 calendar.

May 1143
SunMonTueWedThuFriSat
      1
2345678
9101112131415
16171819202122
23242526272829
3031     

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Zodiac & Birthstone

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

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May 20, 1143 by the Numbers

  • 322,117 days since May 20, 1143
  • 881 years, 11 months, and 2 days ago
  • 10,583 months since then
  • May 20 is in the 20th week of the year 1143 (ISO 8601)
  • 46,016 weeks ago
  • The year 1143 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 (May 20, 1143). 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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