Find more info on our main week number page. Please note that there are multiple systems for week numbering, this is the ISO week date standard (ISO-8601), other systems use weeks starting on Sunday (US) or Saturday (Islamic). Week 20: May 9, 2016: May 15, 2016: passed 339 weeks ago: Week 21: May 16, 2016: May 22. All weeks are starting on Monday and ending on Sunday. If (endOfYear.DayOfWeek < DayOfWeek.Thursday)Ĭonsole.WriteLine("tuan cua ngay :" + wk. Number of weeks in 2016 year is 53 weeks. Nds = NewDate.Subtract(startOfYear).Days + iso8601Correction StartOfYear = fromDate.AddDays(-NewDate.Day + 1).AddMonths(-NewDate.Month + 1) ĮndOfYear = startOfYear.AddYears(1).AddDays(-1) Today, I would like to show you how to retrieve. January 2016 F 1 New Year’s Day S 2 S 3 M 4 1 T 5 W 6 T 7 F 8 S 9 S 10 M 11 2 T 12 W 13 T 14 F 15 S 16 S 17 M 18 Dr. Return Week Number of Previous Year in some cases () Tutorial by Stefan Trost Last update on Created on. Int nds = fromDate.Subtract(startOfYear).Days + iso8601Correction Ĭonsole.WriteLine("nds: " + nds.ToString()) Int iso8601Correction = Ĭonsole.WriteLine("fromDate.Subtract(startOfYear).Days: " + fromDate.Subtract(startOfYear).Days.ToString()) Ĭonsole.WriteLine(": " + ()) Ĭonsole.WriteLine("iso8601Correction: " + iso8601Correction.ToString()) Count Days Add Days Workdays Add Workdays Weekday Week. 1) ISO Week: The International Organization for Standardization (ISO) ISO8601:2000 Standard. You can use something like this DateTime fromDate = new DateTime(2016, 1, 1) // Return Week Number for this dateĭateTime startOfYear = fromDate.AddDays(-fromDate.Day + 1).AddMonths(-fromDate.Month + 1) ĭateTime endOfYear = startOfYear.AddYears(1).AddDays(-1) Week Number Calculator: What Week of the Year Is It Enter a week number to locate the week on a calendar or enter any date to see in which week number it falls.
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