HijriCalendar.IsLeapDay(Int32, Int32, Int32, Int32) Method
Definition
Important
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Determines whether the specified date 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 12 that represents the month.
- day
- Int32
An integer from 1 to 30 that represents the day.
- era
- Int32
An integer that represents the era.
Returns
true if the specified day is a leap day; otherwise, false.
Exceptions
era is outside the range supported by this calendar.
-or-
year is outside the range supported by this calendar.
-or-
month is outside the range supported by this calendar.
-or-
day is outside the range supported by this calendar.
Examples
The following code example calls the IsLeapDay method 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 HijriCalendar.
HijriCalendar^ myCal = gcnew HijriCalendar;
// Creates a holder for the last day of the second month (February).
int iLastDay;
// Displays the header.
Console::Write( "YEAR\t" );
for ( int y = 1421; y <= 1425; y++ )
Console::Write( "\t {0}", y );
Console::WriteLine();
// Checks five years in the current era.
Console::Write( "CurrentEra:" );
for ( int y = 1421; y <= 1425; y++ )
{
iLastDay = myCal->GetDaysInMonth( y, 2, HijriCalendar::CurrentEra );
Console::Write( "\t {0}", myCal->IsLeapDay( y, 2, iLastDay, HijriCalendar::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 = 1421; y <= 1425; 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 1421 1422 1423 1424 1425
CurrentEra: False False False False False
Era 1: False False False False False
*/
using System;
using System.Globalization;
public class SamplesHijriCalendar {
public static void Main() {
// Creates and initializes a HijriCalendar.
HijriCalendar myCal = new HijriCalendar();
// Creates a holder for the last day of the second month (February).
int iLastDay;
// Displays the header.
Console.Write( "YEAR\t" );
for ( int y = 1421; y <= 1425; y++ )
Console.Write( "\t{0}", y );
Console.WriteLine();
// Checks five years in the current era.
Console.Write( "CurrentEra:" );
for ( int y = 1421; y <= 1425; y++ ) {
iLastDay = myCal.GetDaysInMonth( y, 2, HijriCalendar.CurrentEra );
Console.Write( "\t{0}", myCal.IsLeapDay( y, 2, iLastDay, HijriCalendar.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 = 1421; y <= 1425; 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 1421 1422 1423 1424 1425
CurrentEra: False False False False False
Era 1: False False False False False
*/
Imports System.Globalization
Public Class SamplesHijriCalendar
Public Shared Sub Main()
' Creates and initializes a HijriCalendar.
Dim myCal As New HijriCalendar()
' 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 = 1421 To 1425
Console.Write(ControlChars.Tab + "{0}", y)
Next y
Console.WriteLine()
' Checks five years in the current era.
Console.Write("CurrentEra:")
For y = 1421 To 1425
iLastDay = myCal.GetDaysInMonth(y, 2, HijriCalendar.CurrentEra)
Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapDay(y, 2, iLastDay, HijriCalendar.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 = 1421 To 1425
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 1421 1422 1423 1424 1425
'CurrentEra: False False False False False
'Era 1: False False False False False
Remarks
In every 30-year cycle that ends with a year that is evenly divisible by 30, the 2nd, 5th, 7th, 10th, 13th, 16th, 18th, 21st, 24th, 26th, and 29th years are leap years. A common year has 354 days and a leap year has 355 days.
A leap day is a day that occurs only in a leap year. In the Hijri calendar, the 30th day of Zulhijjah is the only leap day.
