For 1 Jan 1684 - this is not working. Calculation is Date (1) + month code (0) + year code (0) + last 2 digits of year (84) + Quotient when last 2 digits divided by 4 (21)-> Remainder (106/7) less 1 (since it is a leap year) -> 1-1 = 0, hence it should be sunday but online calendars state that this was a Tuesday. Please help
It looks like you did everything right but the problem is that this method only works for the Gregorian calendar. In 1684 very few countries used the Gregorian calendar. Most countries at that time were using the Julian calendar which was different than the Gregorian calendar by a few days. The U.S. and England didn’t switch to the Gregorian calendar until sometime around 1752. Most countries made the switch to the Gregorian calendar at different times after 1700. Italy was the first country to use the Gregorian calendar in 1582.
I believe your country was using the Julian calendar on 1 January 1684 which was a Tuesday under that calendar. I think your country went to the Gregorian calendar in 1752. This method of calculating the week day for any date only works under the Gregorian calendar. In your calculation of 1 January 1684 you used the wrong Century number. The Century number is 6. It should be 1 + 0 + 6 + 84 + 21 = 112 112 / 7 = a remainder of 0. Subtract 1 for leap year is 0 - 1 = - 1 which is a SATURDAY. Since Sunday is a 0 just count backwards ( - 1 ) to the previous day of SATURDAY. This is using the Gregorian calendar.
The 5th number to add is the quotient obtained from the division of the year by 12, what should I do if the year is less than 12? Suppose, 2004. Please clarify.
Your method works perfectly on ordinary year. But it doesn’t work on leap year but sometimes it works too. For example take 20 March 2004 it works here but it doesn’t on 16 April 2024
Excellent presentation. One thing to add concerning leap years which need to be determined when the month is either January or February. Leap years are those years that are equally divisible by 4 such a 2000, 2004, 2008, 20012 … and so on. There is 1 exception when determining a leap year which is: years that end in 00 are ONLY leap years if the year is equally divisible by 400. Therefore years 1700, 1800, and 1900 were NOT leap years because they are NOT equally divisible by 400. The year 2000 WAS a leap year because it is equally divisible by 400. Going forward, years 2100, 2200, and 2300 will NOT be leap years because they are NOT equally divisible by 400 while 2400 WILL BE a leap year. Remember, all of the above only apply to years ending in 00.
2000 yr ka keise nikale
For ssc
i think week chart is wrong
How to find the Last year digit of 2001
What to do for when Last no is undividable
The 15th century starts from 1401 to 1500 and not 1400 to 1499. The 1400 is the last year of 14th century.
@@kiirongg yes you are right, that was a mistake.
In this if it is jan or feb but not a leap year?
Here is a challenge 2020 march 31st is Tuesday But as per this method we will get Monday A 2020 is a leap year
2024 is leaf year then find August 3 2024 is which day process Igot directly code 6
I born 2003 .. 03 not devided by 4 .. then what i do ?
For 1 Jan 1684 - this is not working. Calculation is Date (1) + month code (0) + year code (0) + last 2 digits of year (84) + Quotient when last 2 digits divided by 4 (21)-> Remainder (106/7) less 1 (since it is a leap year) -> 1-1 = 0, hence it should be sunday but online calendars state that this was a Tuesday. Please help
It looks like you did everything right but the problem is that this method only works for the Gregorian calendar. In 1684 very few countries used the Gregorian calendar. Most countries at that time were using the Julian calendar which was different than the Gregorian calendar by a few days. The U.S. and England didn’t switch to the Gregorian calendar until sometime around 1752. Most countries made the switch to the Gregorian calendar at different times after 1700. Italy was the first country to use the Gregorian calendar in 1582.
I believe your country was using the Julian calendar on 1 January 1684 which was a Tuesday under that calendar. I think your country went to the Gregorian calendar in 1752. This method of calculating the week day for any date only works under the Gregorian calendar. In your calculation of 1 January 1684 you used the wrong Century number. The Century number is 6. It should be 1 + 0 + 6 + 84 + 21 = 112 112 / 7 = a remainder of 0. Subtract 1 for leap year is 0 - 1 = - 1 which is a SATURDAY. Since Sunday is a 0 just count backwards ( - 1 ) to the previous day of SATURDAY. This is using the Gregorian calendar.
Bro, you added the year code incorrect it is 6..
And for your kind information, it was a Saturday when I searched it up
This method is checked thoroughly. Those who are claiming wrong, i will say them to check the calculation again.
The 5th number to add is the quotient obtained from the division of the year by 12, what should I do if the year is less than 12? Suppose, 2004. Please clarify.
@@subhadipmukherjee574 divide by 4
Your method works perfectly on ordinary year. But it doesn’t work on leap year but sometimes it works too. For example take 20 March 2004 it works here but it doesn’t on 16 April 2024
28.05.2003
i got it wrong
Thank you sir
Excellent presentation. One thing to add concerning leap years which need to be determined when the month is either January or February. Leap years are those years that are equally divisible by 4 such a 2000, 2004, 2008, 20012 … and so on. There is 1 exception when determining a leap year which is: years that end in 00 are ONLY leap years if the year is equally divisible by 400. Therefore years 1700, 1800, and 1900 were NOT leap years because they are NOT equally divisible by 400. The year 2000 WAS a leap year because it is equally divisible by 400. Going forward, years 2100, 2200, and 2300 will NOT be leap years because they are NOT equally divisible by 400 while 2400 WILL BE a leap year. Remember, all of the above only apply to years ending in 00.
Thank you so much sir ❤ it's very helpful for me 🎉😢
this is good but will take a long time to do it mentally
easy way to learn 😊😊thnku brdr ❤
If the year is like 2003, for the quotient we need to divide 03 by 4 which is kinda impossible. How to do with this? Can you please please help.
@@Atax_gaming quotient 0 coming
Thank you 🙏 @@eforexplorer8900
For every leap year or only for your example we have to minus 1
@@shivatejavangala7023 😄
Why did you divide 50 by 4?
@@priyaranadive8237 i will make separate video for that i guess
Amazing, loved the method.
Sir in leap year modification, shall we consider all months or it is only January and February
@@sriharikandimalla2669 only jan/feb
Nd leap year rule always same
please find 1jan2024..
but how about in december 25, 2000
I tried doing 15 jun 2003 it said it was a Sunday I got thur.
@@daniel-xt3tp check ur calculation
@@eforexplorer8900 oops added wrong. Thanks! Also, if I have a leap year, like say July 5th 2077, is it normal?
@@daniel-xt3tp exception is for Jan or Feb not for July, btw 2077 is not a leap year.
@@eforexplorer8900 thanks! I meant 2076
Leap year ka kaya hai sir ji???????
U Have Explained One Exception At Last For Leap Year, It Is Applicable For Only Jan/Feb Months Aaa Bro...🤔
Why you multiplied by 4 and 7 only why not other number
So my birthday is on Monday in the year 2050!! He used my birthday date btw!! ;)
for me... any year perfectly divided by 4 is a leap year.
not always, end of century years have to be divisible by 400, so 1800 isnt a leap year
Since century code for 1900 is 0. Should I add the zero in the equation?
adding zero doesn’t do anything
Yeah 😂
@@Orion225 so it wouldn’t matter if you add it or not
Not working in 20 sept 2012
how not? it works for me
Whats the logic behind this algorithm , how does it work ?
The best
What if the last two digits of the centuries are single digits ? which is less than 4 Like 2001,02 ,03 ?
I got all the answers correct except these☺️ Thankyou
Take quotient 0
@@eforexplorer8900 Ah, thanks for viewing and responding to my comments ✨ And it's working.
If year is 2003 how to find leap years by dividing with 4
Not divisible by 4 so it's not leap year
I skipped the exception part of this video and asked my friend about any date and messed up 😒😒
Where is exception vid?
Thanks bro ❤
Doesnt work dude
What ans are you guys getting for 28th may 2006? I am getting it as Thursday but it is wrong😢
I am getting Sunday
What is logic behind divide by 4 and 7?
The derivation needs a separate video
best explanation on youtube thanks for the formula bro i learned within 30 minutes 🙏🏽
but answer is tuesday 15 aug 2050
2nd oct 2020 leap year weekday goes wrong. Please try it
Leap year but not Jan/Feb
How would you know if it's a leap year?
Divide by 400 if last two digits are zero otherwise divide by 4
How I divide 2002 last digit 02, with 4?
Here quotient 0.
Kya aap 1 jan 2020 ko trick se nikal sakte ho
13 June 2730 can you tell me about it I had tried to calculate according to the method described by you but it fails
Check calculation