how to calculate date from number of days

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

Copy Code code as follows: /* | Author:yang Yu | @param char|int $start _date A valid date format, such as: 20091016,2009-10-16 | @param char|int $end _date ditto | @return weekend days between given dates */ function

Copy codeThe Code is as follows :/* | Author: Yang Yu | @ Param char | int $ start_date is a valid date format, for example, 20091016,2009-10-16. | @ Param char | int $ end_date same as above | @ Return the number of weekend days between a given

Using Java to calculate datetime, first consider the time class, Java provides in the time and date related classes, there is a calendar class, you can get a time and date.To calculate the date 100 days after a certain date, the idea is as follows:1.

Local Test Cases: # there can be no spaces on either side of the equal sign, before the error has been out here yesterday= ' date-d last-day +%y-%m-%d ' echo $yesterday curday= ' Date +%y-%m-%d ' echo $curday echo "Now time: ' Date ' +%y%m%d%T '"

In Java, there are roughly 2 ways to calculate the number of days in a two-day period: first, using a native JDK for computing, providing a more direct and sophisticated approach in JDK8, and using a third-party library. 1, the use of native JDK

Declare @ date & nbsp; datetimeset @ dategetdate (): Current date + Monday (2nd days per week) the number of days difference from the current date -- datepart (weekday, date) the returned value is related to @ datefirst setdatefirst7 -- or set it to

Text functionsCHARCHAR: Returns the corresponding character according to the specified number. The Char function converts the numeric code of other types of computers to characters.Number: The digit that specifies the character, in 1Number: The

PHP date operation code-lunar calendar-solar conversion, leap year, computing days, etc. This is a practical PHP date and time Operation class, it includes the Gregorian calendar-conversion of the lunar calendar, conversion to the Chinese date

From: Java translation station Links: http://it.deepinmind.com/java/2015/03/17/20-examples-of-date-and-time-api-from-Java8.html In addition to lambda expressions, stream, and a few minor improvements, Java 8 introduces a new set of