Thursday January 30, 1017
A date scroll with Latin text from “The Extremes of Good and Evil” by Cicero, written in 45 BC.

January 30, 1017: Day of the Week

January 30, 1017 was the 30th day of the year 1017 in the Gregorian calendar. There were 335 days remaining until the end of the year. The day of the week was Thursday.

The day of the week for January 30, 1017 under the old Julian calendar was Wednesday. 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 Mokuyōbi.

A person born on this day will be 1,008 years old today. If that same person saved a dollar every day starting at age 3, then by now that person has accumulated $367,090.00 today.

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Here’s the January 1017 Gregorian calendar. You can also browse the full year monthly 1017 calendar.

January 1017
SunMonTueWedThuFriSat
   1234
567891011
12131415161718
19202122232425
262728293031 

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Zodiac & Birthstone

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

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January 30, 1017 by the Numbers

  • 368,185 days since January 30, 1017
  • 1,008 years, 0 month, and 20 days ago
  • 12,096 months since then
  • January 30 is in the 5th week of the year 1017 (ISO 8601)
  • 52,597 weeks ago
  • The year 1017 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 (January 30, 1017). 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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