private static void Main()
{
// Configure the calendar, this a predefined holiday set for the NYSE.
// See documentation on more configuration options.
// There are a couple predefined calendars, US holidays, and
// configurations to set yearly, monthly, weekly, day of week, and others.
ThisDate.DefinedCalendars.USA.Calendars.NewYorkStockExchange();;
var aDate = new DateTime(2018, 5, 30, 21, 44, 50); // some random test date/time
var isLastday = aDate.IsLastWeekOfMonth(); // True
var isWorkday = aDate.IsWorkDay(); // True
var isDayOff = aDate.IsDayOff(); // False
var weekOfYear = aDate.WeekOfYear(); // 22
var weekOfMonth = aDate.WeekOfMonth(); // 5
var quarterNo = aDate.Quarter(); // 2
var quarterShort = aDate.QuarterShort(); // "Q2"
var quarterLong = aDate.QuarterLong(); // "Quarter 2"
var isWeekend = aDate.IsWeekend(); // False
var roundToMinute = aDate.RoundToMinute(); // 2018/5/1 21:44:50.0 => 2018/5/1 21:45:00.0
var roundToHour = aDate.RoundToHour(); // 2018/5/1 21:44:50.0 => 2018/5/1 22:00:00.0
var isLastWeek = aDate.IsLastWeekOfMonth(); // True
var thirtyWorkDaysForward = aDate.AddWorkdays(30); // Date 30 working days from aDate, skips holidays, weekends, etc.
var thirtyWorkdaysBack = aDate.AddWorkdays(-30); // Date 30 work days back from aDate, skips holidays, weekends, etc.
var events = aDate.EventsOnDate(true, true); // {}, for this example if aDate = April 4, 2018 then { "Easter Sunday", "Sunday" }
var weeks = CalendarDateTime.WeeksInMonth(2018, 5); // 5
var nyseHolidayNames = CalendarDateTime.KeysEvents; // All the NYSE holidays, "New Years Day", "Martin Luther King Day"... 10 in total.
var isLastDayOfMonth = aDate.IsLastDayOfMonth(); // False
var h = HolidayNames.MartinLutherKingText.EventDatesBetween(2010, 2020); // All Martin Luther King dates from between 2010 and 2020.
var ForthThursday2018Date = CalendarDateTime.DayOfWeekMonthForward(2018, 11, DayOfWeek.Thursday, 4); // Thursday, November 22 (2018/11/22)
var lastDayOfMonth = CalendarDateTime.LastDateOfMonth(2018, 5); // 31
var isLastWeekOfMonth = aDate.IsLastWeekOfMonth(); // True
var aIsFithWendnesdayOfMonth = aDate.IsNthDayOfWeek(5, DayOfWeek.Wednesday); // True
var anotherDate = new DateTime(2018, 11, 22);
var eventsOnThisDay = CalendarDateTime.EventsOnDate(anotherDate, true, true); // {"Thanksgiving Day"}
// A LINQ example (IsWorkDay, IsDayOff). All but the comfiguration methods are LINQ friendly.
var allDaysInMay = Enumerable.Range(1, DateTime.DaysInMonth(2018, 5)).Select(day => new DateTime(2018, 5, day));
var workdays = allDaysInMay.Where(d => d.IsWorkDay());
var daysOff = allDaysInMay.Where(d => d.IsDayOff());
// Add days off for Golfing on Wednesday and Fridays in May.
var fromDate = new DateTime(2018, 5, 1);
var toDate = new DateTime(2018, 5, 31);
var golfDays = new List <DayOfWeek> {
DayOfWeek.Wednesday, DayOfWeek.Friday
};
CalendarDateTime.AddWeeklyEvent("Golf days off in May!", true, golfDays, fromDate, 1, fromDate, toDate); // Add golf days off Wednesdays and Fridays in May.
// Add Easter Sunday to the calendar, events starts in the year 30 and goes forever into the future (null).
CalendarDateTime.AddYearlyCalculatedEvent(HolidayNames.EasterSundayText, true, new DateTime(30, 1, 1), null); // Add easter,
// The calendar is static so once defined it's global.
var someClass = new SomeClass();
var allHolidays = someClass.GetHolidayList();
var easterDateList = someClass.EasterDateRange(1983, 2020);
// Remove Easter Sunday from the calendar.
CalendarDateTime.RemoveEvent(HolidayNames.EasterSundayText);
var countOfCalendarEvents = CalendarDateTime.CountEvents;
var countOfWeeklyEvents = CalendarDateTime.CountWeeklyEvents; // 2, Wednesday & Friday golfdays.
// And more...
}