FirstMondayOfYear
FirstMondayOfYear
Source
public static DateTime FirstMondayOfYear(int ThisYear)
{
DateTime firstDay = new DateTime(ThisYear, 1, 1);
return new DateTime(ThisYear, 1, (8 - (int)firstDay.DayOfWeek) % 7 + 1);
}Example
DateTime mnd = DateExtensions.FirstMondayOfYear(2017);