Sunday September 11, 1549
A date scroll with Latin text from β€œThe Extremes of Good and Evil” by Cicero, written in 45 BC.

September 11, 1549: Day of the Week

September 11, 1549 was the 254th day of the year 1549 in the Gregorian calendar. There were 111 days remaining until the end of the year. The day of the week was Sunday.

The day of the week for September 11, 1549 under the old Julian calendar was Wednesday. 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 dimanche.

A person born on this day will be 475 years old today. If that same person saved a Dime every day starting at age 7, then by now that person has accumulated $17,122.70 today.

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Here’s the September 1549 Gregorian calendar. You can also browse the full year monthly 1549 calendar.

September 1549
SunMonTueWedThuFriSat
    123
45678910
11121314151617
18192021222324
252627282930 

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Zodiac & Birthstone

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

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September 11, 1549 by the Numbers

  • 173,784 days since September 11, 1549
  • 475 years, 9 months, and 20 days ago
  • 5,709 months since then
  • September 11 is in the 36th week of the year 1549 (ISO 8601)
  • 24,826 weeks ago
  • The year 1549 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 (September 11, 1549). 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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