Here goes a much more difficult question...how to know what day is today if you don't have a calendar, a date a phone, etc...you just have your compass and a clear night.
@crxz3yj3rm88
2 жыл бұрын
Ask somone
@pillow1557
2 жыл бұрын
That's just impossible U can't do it if ur not sure what day was yesterday and today,so u should just ask some1
@sazidhasansafwan
Жыл бұрын
Today is "today" 😩
@MukeshRajasekar
Жыл бұрын
Sun's position?
@rock-afire-fan
Жыл бұрын
there are ancient structures erected to determine the position of the sun throughout the year for this purpose
@there.are-no.handlesAVAILABLE.
2 жыл бұрын
By far the best explanation and easiest to remember!!
@MrPathakhemant
2 жыл бұрын
Year part should always be previous year( completed), rest codes need to be revised accordingly ; date folling in Mar.-Dec. of Leap year:Total to be deducted by 1 to get correct day. I have programmed in QB64 and I get correct result for any year 0000 -4000, checked with Mobile & website.
@inxeoz
10 ай бұрын
salute 🫡
@waqasmansoor7657
10 ай бұрын
extremely amazing..I understoood every thing just in one this video
@saikatgigabyte
Жыл бұрын
the easiest method loved it bro❤
@thatkiddbranden
Ай бұрын
best explanation on youtube thanks for the formula bro i learned within 30 minutes 🙏🏽
@thecalendarninja
Жыл бұрын
The fastest way (not easiest until after doing the required memorization) to do this is to prememorize all 100 year values from 00 to 99. Then I just add that to the century code and reduce mod7 and finally add that to a prememorized value for each of the possible 366 dates. For example, June 15, 2012 would simply be: 2+2+1=5, so Friday! June 15 always has a value of 2 (prememorized) 2000's has a century code of 2 and, year 12 always has a value of 1 (prememorized) 2+2+1=5, Friday! Anytime leapyear happens just subtract one from the answer for January or February only, all other months stay the same! I calculate any day of the week using my method in less than a second, almost instantly to 2 seconds tops if I'm thinking a bit. I do both the Julian and Gregorian calendars in both AD and BC infinitely into the past or the future.I do other cool tricks that aren't heard of very often, for example since this calendar math can be viewed as just a simple addition problem, we can also solve for a missing value using subtraction! For example, if we already know the day of the week to be Friday for example, we can solve for a possible month/months or even a date from 1 to 31 or even a possible year or century. Example: Which month or months did Friday the 13th fall on in 1899? 1899 was a Tuesday year (-2+4=2) or (5-3=2). So, Tuesday was the 10th since 3 days later was Friday the 13th. So, 2+13+x=5 (Friday) x=4 because 15+(-10)=5 -10+14=4 Mod7 arithmetic Only January and October had a month code of 4 😁. So it only happened twice that year, in January and in October. Also we can say more intuitively that since 1899 was a Tuesday year, and Friday being 3 days later, which month/months had the Doomsday of 3,10,17,24,31? and obviously that is only January and October. If the question changed to what were all of the Fridays in January and October for example in 1899? We can say "the 6th, 13th, 20th, and 27th" If someone were to instead ask for example on Friday the 13th from 1883 to 1900 what year/years did that happen? We can say "only in 1893 and 1899" In this situation we just needed to find the missing year code of (4 or -3) and only 93 and 99 have that year code in that date range. Likewise, we could have instead solved for the century 😉 also if already given a year.
@navlikesdesign
Жыл бұрын
how is that the easiest * cries *
@Idea_Xpress
Жыл бұрын
Could you please send a link to a website with all the numbers that have to be memorized ?
@awmuzahid3517
Жыл бұрын
Don't come to distrub us if you are a legend than explain it and come for advice 😏
@AzedoTranslated
Жыл бұрын
give us the numbers to memorise
@thecalendarninja
Жыл бұрын
@@navlikesdesign I apologize, it's not necessarily easy until after all the necessary memorization is done. It's the fastest way though for sure, which is the payoff for doing the memorization required to use my method.
@simranmittal4815
3 жыл бұрын
Thank you so much, this video was very helpful 😍
@eforexplorer8900
3 жыл бұрын
Thank you👍 stay connected
@mrmath729
3 жыл бұрын
Thank you very much for your video. Very Useful
@jyotsnanagababy8044
Жыл бұрын
Explanation is very good
@thegem597
3 жыл бұрын
Nice one. Subscribed. Waiting for more maths tricks. 👌👌
@mayureshpatil2468
Жыл бұрын
thanks bro best video on this topic , able to solve all questions 👍👍👍
@navlikesdesign
Жыл бұрын
THANK YOU SO MUCH THIS VIDEO IS SO UNDERRATED
@muhammadrehman6146
Жыл бұрын
Best explanation to remember
@AbdulMannan-mz8wd
Жыл бұрын
It is kind of hard to learn the codes but when you do it is so easy this is very helpful
@s1lly_sunny
2 ай бұрын
My grandpa somehow knows how to do this so im learning this to be able to bond with him lol since we dont really have much to talk about together 😅
@radhikakalapala8080
3 жыл бұрын
Excellent 😊 thank you 🤝
@varun6098
2 жыл бұрын
amazing video thanku so much
@Ri_techpanal
2 жыл бұрын
It's very helpful
@sidhumoosewala4583
2 жыл бұрын
Sir kitni badi problem solv krdi Apne thankyu sir
@MrChrissherren07
3 жыл бұрын
Very helpful!!
@keyachowdhury7907
3 жыл бұрын
Thank you,, next video plzz,,
@fishplayztoh
11 ай бұрын
Thank you very much
@palaeoloxodonantiquus4880
Жыл бұрын
great video
@sixihili1956
Жыл бұрын
best fastest method I think all others took a lot of calculations
@incomputeraccountingwithma482
Жыл бұрын
You shotcut value of calculation 😊
@maynardtrendle820
Жыл бұрын
Great- thanks!
@navya23723
2 жыл бұрын
Thank you explorer!
@poojashoni4789
3 жыл бұрын
Thank you
@anshu6617
2 жыл бұрын
That's really work!👍👍
@USHAKUMARI-oh2zj
2 жыл бұрын
Nice this method is easy 😊😊😊
@Hamarahyderabad-HH
Жыл бұрын
Thank You ❤
@sumanpawar402
3 жыл бұрын
Sir your notes are so much helpful can u plz make all reasoning topics
@eforexplorer8900
2 жыл бұрын
Yes, I have plan to do that.
@MTBwithjamie
2 жыл бұрын
What do you do with let’s say 8.7 or 8.8 or 8.9?
@dfl5015
Жыл бұрын
NICE....Like it !!!!
@Incepter.
Жыл бұрын
Hmmm, interesting that you can find the week-day for any date by just calculating it in your mind...cool
@rexcavalier
Жыл бұрын
This formula is for Gregorian dates only, I think.
@blackeagle9285
2 жыл бұрын
thank you so much bro😘
@davecorrea2686
Жыл бұрын
I'm surprised how well this worked for every-other date thank you so much for this method
@keerthinathpremkumar5270
3 жыл бұрын
Thank you very helpful please make more of these🙏🙏🙏👍👍👍🎉🎉🎉
@eforexplorer8900
3 жыл бұрын
Thank you👍 stay connected
@theonexx762
Жыл бұрын
@@eforexplorer8900 I have a question, why does 6th of July 1944 (Thursday) not work. Only when I don't count the -1 from the total of 4. But that doesn't make sense, because its a leap year and I should technically deduct it.
@eforexplorer8900
Жыл бұрын
@@theonexx762if the month is Jan or Feb then only you should deduct...🙏
@theonexx762
Жыл бұрын
@@eforexplorer8900 got it, thank you so much 🙏🏻
@deepikav5976
2 жыл бұрын
Thank you.. It's works
@joepiacente2311
2 жыл бұрын
There are so many explaining the formula, This is the only one that no questions have to be answered Thank you very much! You made it so simple to understand. Do you also teach Vedic math?
@eforexplorer8900
2 жыл бұрын
Not vedic math
@manojk1849
Жыл бұрын
@@eforexplorer8900 if i calcuate for 24 oct 2028 as it was leap year you told to subtract 1 from givwn answer got wrong
@manojk1849
Жыл бұрын
got monday instead of tuesday
@piyaburman634
9 ай бұрын
@@manojk1849 Is oct not Jan or Feb , so you don't have to subtract...and if you don't subtract you get Tuesday which is correct.
@claudiobuttazzo4513
3 ай бұрын
@@manojk1849 yet not!! You need to subtract *-1* only if you want to try to find the day of week from JANUARY and FEBRUARY about every LEAP YEAR. Example for your date *24 Oct 2028* even if is a leap year, you don't need to subtract - 1. If the date were 16 February 2028 then you need to SUBTRACT -1. So the day of week from 24 Oct 2028 will be : 7+0+6+24+0= 37 = 37:7= *2 remainder* = Tuesday and NOT how you thought before. 💪🤙👍
@bhaibehenchronicles
Жыл бұрын
Thnx so much
@jamshiriyas5395
8 ай бұрын
Thank you boss 👍🏻, tomorrow i have a scholarship exam for CUET tution, i hope this can help me tomorrow 👍🏻
@eforexplorer8900
8 ай бұрын
Best of luck for your exam.
@user-en9il9bu9j
3 жыл бұрын
where come the sentuary code 0 -2-4-6 .. what is its explanation ?
@Raekagme
Жыл бұрын
Thankyou 2 marks is sure for my 2023 csat paper.
@Ignitequotes
2 жыл бұрын
Why to divide by 4
@amankushwaha82466
Жыл бұрын
Thankyou very much sir you have made 10 marks for me before my cuet exam
@sayandas-jd7yp
8 ай бұрын
Tnx love from Bharat. ❤
@user-en9il9bu9j
3 жыл бұрын
in 1582 when the gragorian callender was started . 10 days was emitted . but in 1582 years; surplus days become 12 days. plz explain this gap .
@animax2422
2 жыл бұрын
The original goal of the Gregorian calendar was to change the date of Easter. In 1582, when Pope Gregory XIII introduced his Gregorian calendar, Easter, traditionally observed on March 21, fell further away from the spring equinox by 10 days, not 12. Since it was the Council of Nicaea in 325 that decreed that "Easter should be observed on the first Sunday following the first full moon after the spring equinox on March 21", and by that point the Julian calendar was already off by two days, it stayed that way. So Gregory fixed the calendar only up to 325 skipping 10 days. And the two days error from 53 B.C to 325 A.D stayed with us to this day.
@DimKha
Жыл бұрын
thank you
@anjalidixit4060
Жыл бұрын
Very helpful sir
@Priyaa9025
Жыл бұрын
Thank u so much
@Tasirsheikh345
4 ай бұрын
❤❤❤❤ good job ❤
@watchnetflix394
2 жыл бұрын
how did he get the number 84 below 85?
@nipunkarthikeyan1008
5 ай бұрын
Thanks for this video. Just saying you missed the letter p in the word explorer at the starting of the video
@eforexplorer8900
5 ай бұрын
Yes that's right.
@SpaceVolt
2 жыл бұрын
Thanks
@Mhike177
Жыл бұрын
The name of that mathematician you’re talking about is John H. Conway. He figured out the algorithm to finding out the day for a past or future date by just using one hand. Btw, I checked my birthdays with 3 leap years (2024, 2028, 2044) and no subtractions were necessary. They were all correct with just regular calculation. Perhaps subtraction isn’t necessary.
@devisnomiac212
Жыл бұрын
I calculated For a leap year Subtraction is only required for January and February Meaning your birthday is not in those two months Do clarify please.
@rpyt_7
2 жыл бұрын
thanks
@cpfigueiredo
2 жыл бұрын
The date 5 Feb 2000 results in a final remainder of zero: (5 + 3 + 6 + 0 + 0) / 7 = 2 (with remainder 0). This date fits in the exception of Jan or Feb in a leap year. Hence I should subtract 1 from the remainder, but in this case I would get -1. I suppose I should "wrap" this result such as -1 + 7 = 6 ? I confirmed that this date was a Saturday!
@cpfigueiredo
2 жыл бұрын
@Anaya Ch It has worked for me. I even coded this method in a microcontroller. The only issue I had with the method was the one I mentioned in the previous comment. If it is not working for you, maybe you are missing some little detail.
@eduardoxenofonte4004
2 жыл бұрын
yes, as you add 7 just as you can subtract 7
@shameermandodichalil7696
2 жыл бұрын
@@cpfigueiredonot working for 22\02\1979
@No-hw7mb
2 жыл бұрын
@@shameermandodichalil7696 22+3+0+79+19 =123/7 remainder 4 which is Thursday
@NEENASPSCPOINTS
2 жыл бұрын
Here for subtracting purpose, 0 should be taken as 7. Then 7-1=6 i.e. Saturday.
@laxxsree3241
2 жыл бұрын
U r super awesome 👍
@sureshlingayath
3 жыл бұрын
And also find 25 Dec 1992 Friday is crrct but leap year 1992... -1 is the 5-1=4 Thursday?is it (leap)only works Jan/Feb?
@eforexplorer8900
3 жыл бұрын
Yes, exception is for Jan and Feb only.
@DGEL03
10 ай бұрын
Is the exception only for leap years with date in january or february?
@eforexplorer8900
10 ай бұрын
Yes
@FlowerBFDI2763
Жыл бұрын
I did January 1 0001 and got Saturday
@avidrationalist7281
Жыл бұрын
How did you assign code number 2, 0, 6 etc to the respective years...?????? How one can think which code comes before which year????
@claudiobuttazzo4513
3 ай бұрын
That depends of century years. Still. Our century from 2000 till 2099 have the *CODE 6* , the last CENTURY from 1900 to 1999 had *CODE 0* , beetwen 1800-1899 had the *CODE 2* and beetwen 1700-1799 had the *CODE 4* . So every 4 century will have the same code, for example 1700-1799 = 2100-2199 = *code 4* !! About all of those CODES have a reason. 🤙💪🇪🇸🇮🇹🇨🇭🇦🇷
@amarnathpatel6351
2 жыл бұрын
How do we know Whether It was a Leap Year Or Not ? Is There any Hypothesis For This ?
@eforexplorer8900
2 жыл бұрын
Divide the year by 4, if no remainder comes it's leap year. But for century like 2000, 1900, 2100 etc should be divided by 400.
@archishmanbera4403
Жыл бұрын
Don't you think that the quotient spelling is written wrong
@deepanshuchauhan5022
3 жыл бұрын
How you make these hand writing video..please tell...which software you used..
@eforexplorer8900
3 жыл бұрын
Videoscribe
@mdsahud391
Ай бұрын
Thanks bro ❤
@bpeocheema5330
8 ай бұрын
Thnk u so much ❤
@amitpatra9948
2 жыл бұрын
What about 27 march 2020?
@ItsukiYuge
Жыл бұрын
Thank you sir
@diptiranjana7677
3 жыл бұрын
Thank uhh so much it is very easiest way to calculate 😋
@williamaydelotte6420
2 жыл бұрын
Пенис
@Lilmanminion
2 жыл бұрын
@@williamaydelotte6420 same
@notturkeysalt1208
2 жыл бұрын
@@williamaydelotte6420 That insight is on a whole other level man
@williamaydelotte6420
2 жыл бұрын
@@notturkeysalt1208 lol
@user-eu3rm6ul5k
4 ай бұрын
It is not well as I am trying to me
@nathanielmaghuyop4430
28 күн бұрын
The best
@saitanujamakala765
5 ай бұрын
What if it is not jan or feb in a leap year.. how do we calculate then for march - dec in a leap year?
@eforexplorer8900
5 ай бұрын
Then normal calculation
@mihiraryan513
4 ай бұрын
Nice 👍👍
@navya23723
2 жыл бұрын
In the step -divide by four if the sum is less than 4 then? Ans will come in decimal..how to deal with that?
@duggirambabu7792
2 жыл бұрын
Take quotient as 0.
@aviation.7
3 жыл бұрын
Why did you divide 50 by 4 and the total with 7
@johnsonantony3490
3 жыл бұрын
Their is hidden the formulae ofcourse.7 means it's one week yes I think it's because of we have calculated it for the year having 28 days for February month it is my guess.for leap year calculation will differ.
@lbgamerofficial3303
5 ай бұрын
Sir can u give an example of 1 Jan 1901 and 3 mar 2000
@ArvindKumar-kd2je
2 жыл бұрын
28 Mar 3136 ( being a leap year ) result should be Sat, but with pattern, it's Friday . What may be wrong?
In the century chart u told a basic thing 2064,2064 but here u take 99 years difference so if suppose 1300-1399 is 2 or 0 or 4...?
@eforexplorer8900
Жыл бұрын
This method is valid for any date after 1582 AD
@MTBwithjamie
2 жыл бұрын
I’ve watched this over 5 times and have never gotten it to work what am I doing wrong
@advaykabade
Ай бұрын
Maybe you could try solving the questions first than look at the video then see where you went wrong?
@arjunbojanki
Жыл бұрын
Last two digits 01 or 02 Or 04 vunte How can you find
@PARDEEPKUMAR-fp1ek
Жыл бұрын
can you provide pdf of this presentation , this is very interesting and understandable in a very easy method , hats off to you sir
@eforexplorer8900
Жыл бұрын
Sorry I don't have.
@dunlop9161
2 жыл бұрын
Regarding the exception, just to clarify, you only subtract 1 when there is a leap year AND the month is Jan/Feb? The two have to coincide?
@dunlop9161
2 жыл бұрын
Also, I tried 2 January 1903, which gives you 2 + 0 + 0 + 3 at first. 4 can't fit into 3 though, so how does that work?
@eclipticpath
Жыл бұрын
@@dunlop9161 That's correct, 2.1.1903 is Friday. 4 goes into 3 zero times so you add 0. And yes, only when both conditions (leap year&jan/feb) are met, you subtract one.
@hanzoaturservice6497
Жыл бұрын
@@eclipticpath many thanks ❤
@shen3509
Ай бұрын
How would you know if it's a leap year?
@eforexplorer8900
Ай бұрын
Divide by 400 if last two digits are zero otherwise divide by 4
@Captain_OM_
19 күн бұрын
for me... any year perfectly divided by 4 is a leap year.
@lennoxfukala5434
6 күн бұрын
not always, end of century years have to be divisible by 400, so 1800 isnt a leap year
@zakariazraalk9905
25 күн бұрын
Whats the logic behind this algorithm , how does it work ?
@riya2744
Жыл бұрын
How can we find the day if the year won't be divisible by 4??
@JustJoe-yh5dw
9 ай бұрын
Every year is divisible by 4. If the year is less than 4 the quotient is 0 and remainder is the year. If the year is 00 00/4 = quotient of 0 and remainder of 0 If the year is 01 01/4 = quotient of 0 and remainder of 1 If the year is 02 02/4 = quotient of 0 and remainder of 2 If the year is 03 03/4 = quotient of 0 and remainder of 3
@saichanduaddepalli6929
Жыл бұрын
Sir,why you can take 2000 - 2009 as 6 Pls reply for me sir
@aidanlynch5995
Жыл бұрын
i can’t get this to work for at least the battle of hastings ie 14 october 1066 if somebody could help would be appreciated
@raginijha7610
Жыл бұрын
15th August 1956 is leap year and this formula does not give right answer which is Wednesday.
@JustJoe-yh5dw
Жыл бұрын
That’s because the Julian calendar was used back then. The only difference between the old Julian calendar and the current Gregorian calendar is that under the old Julian calendar every year ending in 00 was a leap year while under the current Gregorian calendar, years ending in 00 are ONLY leap years if they are equally divisible by 400. The years 1800 and 1900 were not leap years while 2000 was a leap year. October 14, 1066 ( Julian calendar ) was a Saturday.
@alliswell5947
Ай бұрын
How I divide 2002 last digit 02, with 4?
@eforexplorer8900
Ай бұрын
Here quotient 0.
@aishwaryaminuku8274
11 ай бұрын
tq u sir
@vimal6786
10 ай бұрын
Can you calculate for April 16 2021 it gives answer Friday but calendar day is Saturday
@JustJoe-yh5dw
10 ай бұрын
April 16, 2021 was definitely a Friday. Either the calendar you are looking at is wrong or you are reading it wrong. April code = 6 day of month=16 century code = 6 Year code is: year + year/4 which = 21+5 6+16+6+21+5=54 54/7 = 5 remainder 5 is a Friday
@shashketh
17 күн бұрын
So my birthday is on Monday in the year 2050!! He used my birthday date btw!! ;)
@memeswallah296
2 жыл бұрын
Sir if in case of feb.or jan.month remainder at last comes out to be 0 then what is the day ,,, E'g 17 Feb.2002
@raulvillar6774
Жыл бұрын
First, Get the day that falls under the code 0... That is sunday. And when you subtract 1 day from sunday, it will give you SATURDAY. That is the answer.
Пікірлер: 536