# how to calculate day of week

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### Calculate the dayof the week

How to calculate the day of the week?Slowtiger published on 2009-11-19 08:42:00How to calculate the day of the week?--Caille (Zeller) formulaWhat is the day of the week in history? What day of the future is the week? With regard to this problem,

### Determine the dayof the week by date (using Kimlarsson to calculate the formula)

Kimlarsson calculation formula determines the day of the week by the date calculateweekday (int y, int m,int d) { if (m==1| | m==2) m+=12,y--; int iweek = (d+2*m+3* (m+1)/5+y+y/4-y/100+y/400)%7; Switch (iweek) {case 0:printf ("Monday \ n");

### C language detailed Jiezzaile (Zeller) formula calculates the dayof the week is extremely convenient

--Caille (Zeller) formulaWhat is the day of the week in history? What day of the future is the week? With regard to this problem, there are many computational formulae (two general formulas and some piecewise formulas), the most notable of which is

### Calendar query algorithm How to calculate how many days a day is the basis of knowledge

How do I calculate the day of the week? --Caille (Zeller) formulaWhat is the day of the week in history? What day of the week is the future? There are a number of computational formulae (two general calculation formulae and some piecewise

### "Reprint" Some extensions to C#datetime, calculate the first dayof the week, the last day

/// ///Some extensions of datetime/// Public classDateTime2 {///  ///get the first day of the week (first day of Sunday)///  ///  ///  Publicdatetime Getweekfirstdaysun (datetime datetime) {//Sunday for the

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### Algorithm: Calculate the dayof the week on the first dayof a year.

First, use your formula to compile a simple program: Main () {Int year;/* year */ Intw;/* day of the week */ Scanf ("% d", & year ); W = (year-1) + (year-1)/4-(year-1)/100 + (year-1)/400 + 1) % 7; Printf ("% d \ n", W ); Getch (); } Enter 1 during

### Calculate the start date and end date of the week based on the Year and week number in php.

If I already know the year and the week of the year (52 weeks in a year), calculate the initial date and end date of the week. The Code is as follows: 1 functionGetWeekDate (\$ year, \$ week) 2 {3 \$ monthsarray (1Jan ., 2Feb ., 3Mar ., 4Apr ., 5May .,

### Oracle Date minute solution and week start end time calculation

1 ORACLE mid-week related knowledge description 1.1 Date formatting functions To_char (X [,FORMAT]) : Press X toFORMATThe format is converted into a string. X is a date,FORMATis a format string that specifies the format in which X is

### How to calculate the dayof a week using JavaScript _ javascript tips-js tutorial

This article describes how to calculate the day of a week in JavaScript. For more information about how to calculate the day of a week in JavaScript, see the example in this article. Share it with you for your reference. The details are as follows:

### How to calculate xx year XX week in SQL Server which days

SQL Server has a very powerful function: DATEPART ()It can calculate that 2017-10-17 is part of this year'sDay of the week: Select DatePart (dy, ' 2017-10-17 ')Week: Select DatePart (wk, ' 2017-10-17 ')First month: Select DATEPART (mm, ' 2017-10-17 '

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