HebrewCalendar.IsLeapDay(Int32, Int32, Int32, Int32) Method
Definition
Important
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Determines whether the specified date in the specified era is a leap day.
public:
override bool IsLeapDay(int year, int month, int day, int era);public override bool IsLeapDay (int year, int month, int day, int era);override this.IsLeapDay : int * int * int * int -> boolPublic Overrides Function IsLeapDay (year As Integer, month As Integer, day As Integer, era As Integer) As BooleanParameters
- year
- Int32
An integer that represents the year.
- month
- Int32
An integer from 1 to 13 that represents the month.
- day
- Int32
An integer from 1 to 30 that represents the day.
- era
- Int32
An integer that represents the era. Specify either HebrewEra or HebrewCalendar.Eras[Calendar.CurrentEra].
Returns
true if the specified day is a leap day; otherwise, false.
Exceptions
year, month, day, or era is outside the range supported by this calendar.
Examples
The following code example calls IsLeapDay for the last day of the second month (February) for five years in each of the eras.
using namespace System;
using namespace System::Globalization;
int main()
{
// Creates and initializes a HebrewCalendar.
HebrewCalendar^ myCal = gcnew HebrewCalendar;
// Creates a holder for the last day of the second month (February).
int iLastDay;
// Displays the header.
Console::Write( "YEAR\t" );
for ( int y = 5761; y <= 5765; y++ )
Console::Write( "\t {0}", y );
Console::WriteLine();
// Checks five years in the current era.
Console::Write( "CurrentEra:" );
for ( int y = 5761; y <= 5765; y++ )
{
iLastDay = myCal->GetDaysInMonth( y, 2, HebrewCalendar::CurrentEra );
Console::Write( "\t {0}", myCal->IsLeapDay( y, 2, iLastDay, HebrewCalendar::CurrentEra ) );
}
Console::WriteLine();
// Checks five years in each of the eras.
for ( int i = 0; i < myCal->Eras->Length; i++ )
{
Console::Write( "Era {0}:\t", myCal->Eras[ i ] );
for ( int y = 5761; y <= 5765; y++ )
{
iLastDay = myCal->GetDaysInMonth( y, 2, myCal->Eras[ i ] );
Console::Write( "\t {0}", myCal->IsLeapDay( y, 2, iLastDay, myCal->Eras[ i ] ) );
}
Console::WriteLine();
}
}
/*
This code produces the following output.
YEAR 5761 5762 5763 5764 5765
CurrentEra: False False False False False
Era 1: False False False False False
*/
using System;
using System.Globalization;
public class SamplesHebrewCalendar {
public static void Main() {
// Creates and initializes a HebrewCalendar.
HebrewCalendar myCal = new HebrewCalendar();
// Creates a holder for the last day of the second month (February).
int iLastDay;
// Displays the header.
Console.Write( "YEAR\t" );
for ( int y = 5761; y <= 5765; y++ )
Console.Write( "\t{0}", y );
Console.WriteLine();
// Checks five years in the current era.
Console.Write( "CurrentEra:" );
for ( int y = 5761; y <= 5765; y++ ) {
iLastDay = myCal.GetDaysInMonth( y, 2, HebrewCalendar.CurrentEra );
Console.Write( "\t{0}", myCal.IsLeapDay( y, 2, iLastDay, HebrewCalendar.CurrentEra ) );
}
Console.WriteLine();
// Checks five years in each of the eras.
for ( int i = 0; i < myCal.Eras.Length; i++ ) {
Console.Write( "Era {0}:\t", myCal.Eras[i] );
for ( int y = 5761; y <= 5765; y++ ) {
iLastDay = myCal.GetDaysInMonth( y, 2, myCal.Eras[i] );
Console.Write( "\t{0}", myCal.IsLeapDay( y, 2, iLastDay, myCal.Eras[i] ) );
}
Console.WriteLine();
}
}
}
/*
This code produces the following output.
YEAR 5761 5762 5763 5764 5765
CurrentEra: False False False False False
Era 1: False False False False False
*/
Imports System.Globalization
Public Class SamplesHebrewCalendar
Public Shared Sub Main()
' Creates and initializes a HebrewCalendar.
Dim myCal As New HebrewCalendar()
' Creates a holder for the last day of the second month (February).
Dim iLastDay As Integer
' Displays the header.
Console.Write("YEAR" + ControlChars.Tab)
Dim y As Integer
For y = 5761 To 5765
Console.Write(ControlChars.Tab + "{0}", y)
Next y
Console.WriteLine()
' Checks five years in the current era.
Console.Write("CurrentEra:")
For y = 5761 To 5765
iLastDay = myCal.GetDaysInMonth(y, 2, HebrewCalendar.CurrentEra)
Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapDay(y, 2, iLastDay, HebrewCalendar.CurrentEra))
Next y
Console.WriteLine()
' Checks five years in each of the eras.
Dim i As Integer
For i = 0 To myCal.Eras.Length - 1
Console.Write("Era {0}:" + ControlChars.Tab, myCal.Eras(i))
For y = 5761 To 5765
iLastDay = myCal.GetDaysInMonth(y, 2, myCal.Eras(i))
Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapDay(y, 2, iLastDay, myCal.Eras(i)))
Next y
Console.WriteLine()
Next i
End Sub
End Class
'This code produces the following output.
'
'YEAR 5761 5762 5763 5764 5765
'CurrentEra: False False False False False
'Era 1: False False False False False
Remarks
This implementation of the HebrewCalendar class recognizes only the Hebrew years 5343 to 5999 (1583 to 2239 in the Gregorian calendar).
In every 19-year cycle that ends with a year that is evenly divisible by 19, the 3rd, 6th, 8th, 11th, 14th, 17th, and 19th years are leap years. A common year can have from 353 to 355 days, depending on the placement of Jewish holidays. A leap year can have from 383 to 385 days.
A leap day is a day that occurs only in a leap year. In the Hebrew calendar, the last day of Adar Alef and all the days in Adar Beit are considered leap days.
