Wednesday September 18, 1348
A date scroll with Latin text from โ€œThe Extremes of Good and Evilโ€ by Cicero, written in 45 BC.

September 18, 1348: Day of the Week

September 18, 1348 was the 262nd day of the year 1348 in the Gregorian calendar. There were 104 days remaining until the end of the year. The day of the week was Wednesday.

The day of the week for September 18, 1348 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 Suiyōbi.

A person born on this day will be 676 years old today. If that same person saved a Quarter every day starting at age 3, then by now that person has accumulated $61,497.50 today.

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Here’s the September 1348 Gregorian calendar. You can also browse the full year monthly 1348 calendar.

September 1348
SunMonTueWedThuFriSat
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891011121314
15161718192021
22232425262728
2930     

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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 18, 1348 by the Numbers

  • 247,085 days since September 18, 1348
  • 676 years, 6 months, and 0 day ago
  • 8,118 months since then
  • September 18 is in the 38th week of the year 1348 (ISO 8601)
  • 35,297 weeks ago
  • The year 1348 is 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 18, 1348). 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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