Saturday October 4, 1423
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

October 4, 1423: Day of the Week

October 4, 1423 was the 277th day of the year 1423 in the Gregorian calendar. There were 88 days remaining until the end of the year. The day of the week was Saturday.

The day of the week for October 4, 1423 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 sábado.

A person born on this day will be 600 years old today. If that same person saved a Cent every day starting at age 3, then by now that person has accumulated $2,184.03 today.

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Here’s the October 1423 Gregorian calendar. You can also browse the full year monthly 1423 calendar.

October 1423
SunMonTueWedThuFriSat
   1234
567891011
12131415161718
19202122232425
262728293031 

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Zodiac & Birthstone

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

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October 4, 1423 by the Numbers

  • 219,499 days since October 4, 1423
  • 600 years, 11 months, and 17 days ago
  • 7,211 months since then
  • October 4 is in the 40th week of the year 1423 (ISO 8601)
  • 31,357 weeks ago
  • The year 1423 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 (October 4, 1423). 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.

Share InfoNow try another date like anniversaries, birthdays of someone you know or any other date that is special to you. Don’t forget to share the info to your friends, loved ones or social media followers. Who knows, they might appreciate and thank you for it.