week-number

I have an array of random dates (not coming from MySQL). I need to group them by the week as Week1, Week2, and so on upto Week5. What I have is this: $dates = array('2015-09-01','2015-09-05','2015-09-06','2015-09-15','2015-09-17'); What I need is a function to get the week number of the month by providing the date. I know that I can get the weeknumber by doing date('W',strtotime('2015-09-01')); but this week number is the number between year (1-52) but I need the week number of the month only, e.g. in Sep 2015 there are 5 weeks: Week1 = 1st to 5th Week2 = 6th to 12th Week3 = 13th to 19th Week4

I have a query that counts member's wedding dates in the database... Select Sum(NumberOfBrides) As [Wedding Count], DATEPART( wk, WeddingDate) as [Week Number], DATEPART( year, WeddingDate) as [Year] FROM MemberWeddingDates Group By DATEPART( year, WeddingDate), DATEPART( wk, WeddingDate) Order By Sum(NumberOfBrides) Desc How do I work out when the start and end of each week represented in the result set? Select Sum(NumberOfBrides) As [Wedding Count], DATEPART( wk, WeddingDate) as [Week Number], DATEPART( year, WeddingDate) as [Year], ??? as WeekStart, ??? as WeekEnd FROM MemberWeddingDates

How to find out what week number is current year on June 16th (wk24) with Python? Horst Gutmann datetime.date has a isocalendar() method, which returns a tuple containing the calendar week: >>> import datetime >>> datetime.date(2010, 6, 16).isocalendar()[1] 24 datetime.date.isocalendar() is an instance-method returning a tuple containing year, weeknumber and weekday in respective order for the given date instance. jotacor You can get the week number directly from datetime as string. >>> import datetime >>> datetime.date(2010, 6, 16).strftime("%V") '24' Also you can get different "types" of the

For instance: Calendar c = Calendar.getInstance(); DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy"); c.setTime( sdf.parse("31/12/2010")); out.println( c.get( Calendar.WEEK_OF_YEAR ) ); Prints 1 Same happens with Joda time. :) Ralph The definition of Week of Year is Locale dependent. How it is defined in US is discused in the other posts. For example in Germany ( DIN 1355-1 / ISO 8601 ): the first Week* of Year is the first week with 4 or more days in the new year. *first day of week is Monday and last day of week is Sunday And Java’s Calendar pays attention to the locale. For example: