May 21, 1531: Day of the Week
May 21, 1531 was the 141st day of the year 1531 in the Gregorian calendar. There were 224 days remaining until the end of the year. The day of the week was Thursday.
The day of the week for May 21, 1531 under the old Julian calendar was Sunday. 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 494 years old today. If that same person saved a Nickel every day starting at age 5, then by now that person has accumulated $8,932.30 today.
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Here’s the May 1531 Gregorian calendar. You can also browse the full year monthly 1531 calendar.
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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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May 21, 1531 by the Numbers
- 180,473 days since May 21, 1531
- 494 years, 1 month, and 11 days ago
- 5,929 months since then
- May 21 is in the 21st week of the year 1531 (ISO 8601)
- 25,781 weeks ago
- The year 1531 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 (May 21, 1531). 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.
Now try another date like anniversaries, birthdays of someone you know or any other date that is special to you. Don’t forget to share the info to your friends, loved ones or social media followers. Who knows, they might appreciate and thank you for it.