Does anyone want to know the day week/weekend he or she was born on? Send me a Month, Date & Year & I answer.?

Question

Basic arithmetic was my best & favorite school subject. During my highschool years, all on my own, I deciede to study over the Calendar. Reason? To figure out what day events & birthdates originally occurred on! My birthdate was a Wednesday & my parents birthdates were on Sunday's, but 121 WEEKS & 847 DAYS are imbetween their birthdates. For anyone that likes Elvis Presley, his birthdate was Tuesday, January 8th, 1935 & Tuesday, August 16th, 1977, he died. His lifetime, in WEEKS & DAYS is/was: 15,561 DAYS & 2,223 WEEKS & 0 DAYS.
History Events:
July 4th, 1776 was a Thursday,
& I have figured out all 50 States Statehood Dates & Presidential Lifetimes. I go to bed doing mathematical equasions, since I was in third grade! To make humor of 36x24x36, 36 x 24 x 36 = 31,104. Honestly. & Two equasions that require all ten numerals are, one in +&- is 657 + 432 = 1,089 & one in x & division, 715 x 46 = 32,890.
(1234567890).

The Gregorian Calendar Rotates COMPLETELY, in 400 years or four centuries!
146,097 DAYS & 20,871 WEEKS are in 400 years & 97 Leap Lears!

Answer 1

Nice try above on the date. For the countries that switched from the Julian to Gregorian calendar in 1582, that date didn't exist. However, England and the British speaking colonies didn't switch until 1752. A similar question would be what day was Sept. 7, 1752? (The day after Sept 2, 1752 was Sept 14, 1752 in the colonies).

Anyway, I'm assuming you are asking about birthdates and other recent dates to avoid this problem. Nobody living today could have been born before the Gregorian calendar was adopted.

BTW, I too can calculate dates in my head so it isn't that impressive anymore. Do you memorize a table for the months (e.g. 144 025 036 146 or 622 503 514 624, for example) or do you use another method?

My question to you is, someone I know was born on the first day of the 20th century. What day of the week was that?

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Edit: You sent an e-mail with the following reply, "The 20th Century began on January 1st, 1901 & that date was a Wednesday.
January 1st, 1900 was a Tuesday. "

Well, you did correctly realize that the first day of the 20th century was Jan. 1, 1901, but unfortunately, my grandmother was born on a Tuesday!

My calculations show:
year = 1
leap years 1/4 = 0
century offset = 1
Total = 2

January in 622 503 514 624 is a 6:
Total = 8 (or 1)
day = 1
Final total = 2 [Sun (0), Mon(1), Tue(2), etc.]

So 1/1/1901 was a Tuesday.

And Jan. 1, 1900 (a non-leap year by the way) was a Monday!

year = 0
leap years 0/4 = 0
century offset = 1
Total = 1

January in 622 503 514 624 is a 6:
Total = 7 (or 0)
No subtraction for leap year (because it wasn't)

day = 1
Final total = 1 [Sun (0), Mon(1), Tue(2), etc.]

So 1/1/1900 was a Tuesday.

Try again.

P.S. Since you like numbers that are pan-digital (using all ten digits) can you tell me what is the smallest palindromic number (e.g. 1473741) that squares (e.g. 1473741²) to result in a number with all ten digits? Hint:, it's obviously not 1473741²...

Answer 2

Ok. What day of the week was October 9, 1582?