For any date in the 1900s, the Century Code is zero. 8 0 obj Brother, if it is not jan or feb of leap year what number i substract from the formula? Hot! In a few calendars, the week begins with 1 as for Monday and 7 as Sunday, which is like the ISO 8601 standards calendar. Weekend! %PDF-1.5 Thank u so much this really works, please posting updates! After 2017 the equation is
(Year Code + Month Code + Century Code + Date Number – Leap Year Code) mod 7. The fraction, 2/4, is dropped. Dec=5 You could use a number shape image like a swan to hold that in memory while you calculate the items below. Find the Month Offset: Consider there are 4 weeks in a month, which means 4 x 7 = 28 days. See the ISO-8601 update on Stack Overflow, Replace now() with other dates eg. @Sai – please write out the steps that you tried and then I will be able to see where you might have made a mistake in the calculation. Day code 28 mod 7 = 0 Train your brain with real-time memory competition software. please give me the leap year codes which we have to subtract finally to get the formula. (86 + 21)) mod 7 For instance, Sunday is the first day of the week and is represented by 1, Monday by 2, and so on. Continue the same process till December… The numbers for the months are, Month Offsets table: , Please tell me which centuries consider in Julian and in gregorian calendar. Week! Date code=28 Then I did 18-2=16 mod 7 which was 2. i have right formula. The remainder was 2. How? … helo…sir Thnaks.
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This problem can be easily fixed by checking for a subtotal of 0 before subtracting the Leap Year Code. 15-14= 1 For the Gregorian Calendar, remember the number 4206420: If you are only doing this calendar trick with friends’ birthdays, you could probably leave this step out, because dates that fall in the 1900s get a Century Code of zero and don’t affect the outcome of the calculation. @Senthil – did you take into account Julian Dates?
No month corresponds with October. Is any calculation for century code ? endobj November 3 But the correct answer is Thursday. 30/7 Thank you and all the viewers of this site for their clues. Disney Images! Correct me If I am wrong. 2 (Tuesday). https://rosettacode.org/mw/index.php?title=Day_of_the_week&oldid=314046. 4 Quite a nice trick…I am my own calendar now..Im now a walking calendar. Connect. The “div” and “mod” refer to integer division (discard the remainder) and a modulo operation (keep only the remainder) respectively. The above equation is for Year up to 2017. So if January 1, 2001, was Monday, January 1, 2002, will fall on a Tuesday because 2002 … can u explain this..? April has 30 Days, May 31 days, and June has 30 days, which add up to 91. Fashion! School! could you explain the logic behind the formula and calculation. Therefore – (6+10+6+14-1)=35, 35Mod7=0, 0=Sunday 2 is Tuesday. Try doing the calculation again from the beginning. Share Copy sharable link for this gist. Directions. 2000 is a leap year, since it can be divided by 400, and the date is in a January or February, so subtract 1 from the total in the final step. Calendars in some countries use a separate color for the weekends and reserve the black or gray fonts for the weekdays, Monday through Friday. century code for 1900 = 0 But how can we get Century codes for : Gregorian– before 17th century and after 23th century.
Fenomarch 3 (0 + 7 + 2 + 6 -0) mod7 @prateek – please show all of your work, similar to how I did it in this comment (above). "Sat") %A: Full weekday name. https://en.wikipedia.org/wiki/Clock_angle_problem, @sam nil – I’m pretty sure that the Battle of Hastings was on a Saturday. Here i am getting number in point then how to solve it, Hello, Apjuly6 The algorithm provided works perfectly. anybody can ask me right answer. 82 mod 7 makes a Year Code of 5. Julian- after 18th century. This method works. Thanx for posting such a smart method. Thanks!! from my book to find out the day of any date need not to do any calculation. The Day Number is 27. Read more. To calculate the Year Code, use this formula: YY is the last two digits of the year. Year Code: 6, Month = 0 Add to it the last two digits of the year. Please assist. March 3 2 mod7 = 2 Ex, Dec 28th 1974 : 1 2 3 4
int yearCode = ((yearCount/4) + yearCount) % 7; int monthCode = monthCodes[month – 1]; Remainder for 35/7 is 0. (16 + 4) % 7 a) Saturday b) Tuesday c) Sunday 8) How many days are in a week? Insults! Month-Code: ——-0 So if January 1, 2001, was Monday, January 1, 2002, will fall on a Tuesday because 2002 was not a leap year. The other thing to take into account is whether you are dealing with a leap year. Month code: 10 You only subtract 1 in a leap year if the date is in January or February. Then I can help with any errors.
Leap Year code: 1
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