Friday May 12, 1443
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

May 12, 1443: Day of the Week

May 12, 1443 was the 132nd day of the year 1443 in the Gregorian calendar. There were 233 days remaining until the end of the year. The day of the week was Friday.

The day of the week for May 12, 1443 under the old Julian calendar was Sunday. 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 vendredi.

A person born on this day will be 582 years old today. If that same person saved a Nickel every day starting at age 5, then by now that person has accumulated $10,539.70 today.

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Here’s the May 1443 Gregorian calendar. You can also browse the full year monthly 1443 calendar.

May 1443
SunMonTueWedThuFriSat
 123456
78910111213
14151617181920
21222324252627
28293031   

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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 12, 1443 by the Numbers

  • 212,621 days since May 12, 1443
  • 582 years, 1 month, and 18 days ago
  • 6,985 months since then
  • May 12 is in the 19th week of the year 1443 (ISO 8601)
  • 30,374 weeks ago
  • The year 1443 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 12, 1443). 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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