Tuesday October 9, 1438
A date scroll with Latin text from โ€œThe Extremes of Good and Evilโ€ by Cicero, written in 45 BC.

October 9, 1438: Day of the Week

October 9, 1438 was the 282nd day of the year 1438 in the Gregorian calendar. There were 83 days remaining until the end of the year. The day of the week was Tuesday.

The day of the week for October 9, 1438 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 Kayōbi.

A person born on this day will be 585 years old today. If that same person saved a Quarter every day starting at age 3, then by now that person has accumulated $53,229.75 today.

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Here’s the October 1438 Gregorian calendar. You can also browse the full year monthly 1438 calendar.

October 1438
SunMonTueWedThuFriSat
 123456
78910111213
14151617181920
21222324252627
28293031   

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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.

Coffee Love Holy Toledo! Did you know that coffee and word games are an excellent combination to sharpen your vocabulary? Let’s give it a quick spin. Within 30 seconds, how many words can you think of from these letters EOHHAUFCE? Check your answers here: Make words with these letters EOHHAUFCE. (Sponsored by WordFinder.Cafe)

October 9, 1438 by the Numbers

  • 214,015 days since October 9, 1438
  • 585 years, 11 months, and 12 days ago
  • 7,031 months since then
  • October 9 is in the 41st week of the year 1438 (ISO 8601)
  • 30,573 weeks ago
  • The year 1438 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 9, 1438). 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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