What day of the week is this date?

Thursday May 18, 1178

May 18, 1178: Day of the Week

May 18, 1178 was the 138th day of the year 1178 in the Gregorian calendar. There were 227 days remaining until the end of the year. The day of the week was Thursday.

The day of the week for May 18, 1178 under the old Julian calendar was Thursday. Did you notice the similarity with the Gregorian calendar?

If you are trying to learn French then this day of the week in French is jeudi.

A person born on this day will be 839 years old today. If that same person saved a Half dollar every day starting at age 7, then by now that person has accumulated $152,020.00 today. That is, assuming this person is still alive and kicking.

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Here’s the May 1178 Gregorian calendar. You can also browse the full year monthly 1178 calendar.

May 1178
SunMonTueWedThuFriSat
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78910111213
14151617181920
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28293031   

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Zodiac & Birthstone

Taurus is the zodiac sign of a person born on this day. Emerald is the modern birthstone for this month. Sapphire 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 (May 18, 1178). 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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