What day of the week is this date?

Monday December 14, 1170

December 14, 1170: Day of the Week

December 14, 1170 was the 348th day of the year 1170 in the Gregorian calendar. There were 17 days remaining until the end of the year. The day of the week was Monday.

The day of the week for December 14, 1170 under the old Julian calendar was Monday. Did you notice the similarity with the Gregorian calendar?

If you are trying to learn Spanish then this day of the week in Spanish is lunes.

A person born on this day will be 848 years old today. If that same person saved a Half dollar every day starting at age 5, then by now that person has accumulated $154,029.50 today.

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Here’s the December 1170 Gregorian calendar. You can also browse the full year monthly 1170 calendar.

December 1170
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Zodiac & Birthstone

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

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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 (December 14, 1170). 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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