PersianCalendar クラス

定義

public ref class PersianCalendar : System::Globalization::Calendar

public class PersianCalendar : System.Globalization.Calendar

[System.Serializable]
public class PersianCalendar : System.Globalization.Calendar

type PersianCalendar = class
    inherit Calendar

[<System.Serializable>]
type PersianCalendar = class
    inherit Calendar

Public Class PersianCalendar
Inherits Calendar

継承

Object

Calendar

PersianCalendar

属性

SerializableAttribute

例

次の例では、DateTime プロパティ、DateTime.Now コンストラクター、およびペルシア暦の DateTime メソッドを使用して、ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32) オブジェクトをインスタンス化します。 その後、グレゴリオ暦とペルシャ暦の両方にこれらの日付が表示されます。 また、ペルシア暦の日付範囲も表示されます。

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
        PersianCalendar pc = new PersianCalendar();
        DateTime thisDate = DateTime.Now;

        // Display the current date using the Gregorian and Persian calendars.
        Console.WriteLine("Today in the Gregorian Calendar:  {0:dddd}, {0}", thisDate);
        Console.WriteLine("Today in the Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}\n",
                      pc.GetDayOfWeek(thisDate),
                      pc.GetMonth(thisDate),
                      pc.GetDayOfMonth(thisDate),
                      pc.GetYear(thisDate),
                      pc.GetHour(thisDate),
                      pc.GetMinute(thisDate),
                      pc.GetSecond(thisDate));

        // Create a date using the Gregorian calendar.
        thisDate = new DateTime(2013, 5, 28, 10, 35, 0);
        Console.WriteLine("Gregorian Calendar:  {0:D} ", thisDate);
        Console.WriteLine("Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}\n",
                          pc.GetDayOfWeek(thisDate),
                          pc.GetMonth(thisDate),
                          pc.GetDayOfMonth(thisDate),
                          pc.GetYear(thisDate),
                          pc.GetHour(thisDate),
                          pc.GetMinute(thisDate),
                          pc.GetSecond(thisDate));

        // Create a date using the Persian calendar.
        thisDate = pc.ToDateTime(1395, 4, 22, 12, 30, 0, 0);
        Console.WriteLine("Gregorian Calendar:  {0:D} ", thisDate);
        Console.WriteLine("Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}\n",
                      pc.GetDayOfWeek(thisDate),
                      pc.GetMonth(thisDate),
                      pc.GetDayOfMonth(thisDate),
                      pc.GetYear(thisDate),
                      pc.GetHour(thisDate),
                      pc.GetMinute(thisDate),
                      pc.GetSecond(thisDate));

        // Show the Persian Calendar date range.
        Console.WriteLine("Minimum Persian Calendar date (Gregorian Calendar):  {0:D} ",
                          pc.MinSupportedDateTime);
        Console.WriteLine("Minimum Persian Calendar date (Persian Calendar):  " +
                          "{0}, {1}/{2}/{3} {4}:{5}:{6}\n",
                          pc.GetDayOfWeek(pc.MinSupportedDateTime),
                          pc.GetMonth(pc.MinSupportedDateTime),
                          pc.GetDayOfMonth(pc.MinSupportedDateTime),
                          pc.GetYear(pc.MinSupportedDateTime),
                          pc.GetHour(pc.MinSupportedDateTime),
                          pc.GetMinute(pc.MinSupportedDateTime),
                          pc.GetSecond(pc.MinSupportedDateTime));

        Console.WriteLine("Maximum Persian Calendar date (Gregorian Calendar):  {0:D} ",
                          pc.MaxSupportedDateTime);
        Console.WriteLine("Maximum Persian Calendar date (Persian Calendar):  " +
                          "{0}, {1}/{2}/{3} {4}:{5}:{6}\n",
                          pc.GetDayOfWeek(pc.MaxSupportedDateTime),
                          pc.GetMonth(pc.MaxSupportedDateTime),
                          pc.GetDayOfMonth(pc.MaxSupportedDateTime),
                          pc.GetYear(pc.MaxSupportedDateTime),
                          pc.GetHour(pc.MinSupportedDateTime),
                          pc.GetMinute(pc.MaxSupportedDateTime),
                          pc.GetSecond(pc.MaxSupportedDateTime));
   }
}
// The example displays the following output when run under the .NET Framework 4.6:
//    Today in the Gregorian Calendar:  Monday, 2/4/2013 9:11:36 AM
//    Today in the Persian Calendar:    Monday, 11/16/1391 9:11:36
//
//    Gregorian Calendar:  Tuesday, May 28, 2013
//    Persian Calendar:    Tuesday, 3/7/1392 10:35:0
//
//    Gregorian Calendar:  Tuesday, July 12, 2016
//    Persian Calendar:    Tuesday, 4/22/1395 12:30:0
//
//    Minimum Persian Calendar date (Gregorian Calendar):  Friday, March 22, 0622
//    Minimum Persian Calendar date (Persian Calendar):  Friday, 1/1/1 0:0:0
//
//    Maximum Persian Calendar date (Gregorian Calendar):  Friday, December 31, 9999
//    Maximum Persian Calendar date (Persian Calendar):  Friday, 10/13/9378 0:59:59
//
// The example displays the following output when run under versions of
// the .NET Framework before the .NET Framework 4.6:
//    Today in the Gregorian Calendar:  Monday, 2/4/2013 9:11:36 AM
//    Today in the Persian Calendar:    Monday, 11/16/1391 9:11:36
//
//    Gregorian Calendar:  Tuesday, May 28, 2013
//    Persian Calendar:    Tuesday, 3/7/1392 10:35:0
//
//    Gregorian Calendar:  Tuesday, July 12, 2016
//    Persian Calendar:    Tuesday, 4/22/1395 12:30:0
//
//    Minimum Persian Calendar date (Gregorian Calendar):  Thursday, March 21, 0622
//    Minimum Persian Calendar date (Persian Calendar):  Thursday, 1/1/1 0:0:0
//
//    Maximum Persian Calendar date (Gregorian Calendar):  Friday, December 31, 9999
//    Maximum Persian Calendar date (Persian Calendar):  Friday, 10/10/9378 0:59:59

Imports System.Globalization

Module Example
    Public Sub Main()
        Dim pc As New PersianCalendar()
        Dim thisDate As Date = Date.Now

        ' Display the current date using the Gregorian and Persian calendars. 
        Console.WriteLine("Today in the Gregorian Calendar:  {0:dddd}, {0}", thisDate)
        Console.WriteLine("Today in the Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}",  
                      pc.GetDayOfWeek(thisDate),
                      pc.GetMonth(thisDate),
                      pc.GetDayOfMonth(thisDate), 
                      pc.GetYear(thisDate),
                      pc.GetHour(thisDate),
                      pc.GetMinute(thisDate),
                      pc.GetSecond(thisDate))
        Console.WriteLine()
        
        ' Create a date using the Gregorian calendar.
        thisDate = New DateTime(2013, 5, 28, 10, 35, 0)
        Console.WriteLine("Gregorian Calendar:  {0:D} ", thisDate)
        Console.WriteLine("Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}", 
                      pc.GetDayOfWeek(thisDate),
                      pc.GetMonth(thisDate),
                      pc.GetDayOfMonth(thisDate), 
                      pc.GetYear(thisDate),
                      pc.GetHour(thisDate),
                      pc.GetMinute(thisDate),
                      pc.GetSecond(thisDate))
        Console.WriteLine()
         
        ' Create a date using the Persian calendar.
        thisDate = pc.ToDateTime(1395, 4, 22, 12, 30, 0, 0)
        Console.WriteLine("Gregorian Calendar:  {0:D} ", thisDate)
        Console.WriteLine("Persian Calendar:    {0}, {1}/{2}/{3} {4}:{5}:{6}", 
                      pc.GetDayOfWeek(thisDate),
                      pc.GetMonth(thisDate),
                      pc.GetDayOfMonth(thisDate), 
                      pc.GetYear(thisDate),
                      pc.GetHour(thisDate),
                      pc.GetMinute(thisDate),
                      pc.GetSecond(thisDate))
        Console.WriteLine()
        
        ' Show the Persian Calendar date range.
        Console.WriteLine("Minimum Persian Calendar date (Gregorian Calendar):  {0:D} ", 
                          pc.MinSupportedDateTime)
        Console.WriteLine("Minimum Persian Calendar date (Persian Calendar):  " +    
                          "{0}, {1}/{2}/{3} {4}:{5}:{6}",  
                          pc.GetDayOfWeek(pc.MinSupportedDateTime), 
                          pc.GetMonth(pc.MinSupportedDateTime), 
                          pc.GetDayOfMonth(pc.MinSupportedDateTime),  
                          pc.GetYear(pc.MinSupportedDateTime), 
                          pc.GetHour(pc.MinSupportedDateTime), 
                          pc.GetMinute(pc.MinSupportedDateTime), 
                          pc.GetSecond(pc.MinSupportedDateTime))
        Console.WriteLine()
        
        Console.WriteLine("Maximum Persian Calendar date (Gregorian Calendar):  {0:D} ", 
                          pc.MaxSupportedDateTime)
        Console.WriteLine("Maximum Persian Calendar date (Persian Calendar):  " +   
                          "{0}, {1}/{2}/{3} {4}:{5}:{6}",  
                          pc.GetDayOfWeek(pc.MaxSupportedDateTime), 
                          pc.GetMonth(pc.MaxSupportedDateTime), 
                          pc.GetDayOfMonth(pc.MaxSupportedDateTime),  
                          pc.GetYear(pc.MaxSupportedDateTime), 
                          pc.GetHour(pc.MinSupportedDateTime), 
                          pc.GetMinute(pc.MaxSupportedDateTime), 
                          pc.GetSecond(pc.MaxSupportedDateTime))
        Console.WriteLine()
    End Sub
End Module 
' The example displays the following output when run under the .NET Framework 4.6:
'    Today in the Gregorian Calendar:  Monday, 2/4/2013 9:11:36 AM
'    Today in the Persian Calendar:    Monday, 11/16/1391 9:11:36
'
'    Gregorian Calendar:  Tuesday, May 28, 2013
'    Persian Calendar:    Tuesday, 3/7/1392 10:35:0
'
'    Gregorian Calendar:  Tuesday, July 12, 2016
'    Persian Calendar:    Tuesday, 4/22/1395 12:30:0
'
'    Minimum Persian Calendar date (Gregorian Calendar):  Friday, March 22, 0622
'    Minimum Persian Calendar date (Persian Calendar):  Friday, 1/1/1 0:0:0
'
'    Maximum Persian Calendar date (Gregorian Calendar):  Friday, December 31, 9999
'    Maximum Persian Calendar date (Persian Calendar):  Friday, 10/13/9378 0:59:59
'
' The example displays the following output when run under versions of
' the .NET Framework before the .NET Framework 4.6:
'    Today in the Gregorian Calendar:  Monday, 2/4/2013 9:11:36 AM
'    Today in the Persian Calendar:    Monday, 11/16/1391 9:11:36
'
'    Gregorian Calendar:  Tuesday, May 28, 2013
'    Persian Calendar:    Tuesday, 3/7/1392 10:35:0
'
'    Gregorian Calendar:  Tuesday, July 12, 2016
'    Persian Calendar:    Tuesday, 4/22/1395 12:30:0
'
'    Minimum Persian Calendar date (Gregorian Calendar):  Thursday, March 21, 0622
'    Minimum Persian Calendar date (Persian Calendar):  Thursday, 1/1/1 0:0:0
'
'    Maximum Persian Calendar date (Gregorian Calendar):  Friday, December 31, 9999
'    Maximum Persian Calendar date (Persian Calendar):  Friday, 10/10/9378 0:59:59

次の例では、 PersianCalendar クラスのフィールド、プロパティ、およびメソッドのメンバーを示します。

using System;
using System.Globalization;

class Sample
{
    public static void Main()
    {
      PersianCalendar jc = new PersianCalendar();
      DateTime thisDate = DateTime.Now;

        //--------------------------------------------------------------------------------
        // Properties
        //--------------------------------------------------------------------------------
      Console.WriteLine("\n........... Selected Properties .....................\n");
      Console.Write("Eras:");
      foreach (int era in jc.Eras)
      {
         Console.WriteLine(" era = {0}", era);
      }
        //--------------------------------------------------------------------------------
      Console.WriteLine("\nTwoDigitYearMax = {0}", jc.TwoDigitYearMax);
        //--------------------------------------------------------------------------------
        // Methods
        //--------------------------------------------------------------------------------
      Console.WriteLine("\n............ Selected Methods .......................\n");

        //--------------------------------------------------------------------------------
      Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate));
        //--------------------------------------------------------------------------------
      Console.WriteLine("GetDaysInMonth: days = {0}",
                        jc.GetDaysInMonth( thisDate.Year, thisDate.Month,
                        PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------
      Console.WriteLine("GetDaysInYear: days = {0}",
                        jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------
      Console.WriteLine("GetLeapMonth: leap month (if any) = {0}",
                        jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra));
        //-------------------------------------------------------------
      Console.WriteLine("GetMonthsInYear: months in a year = {0}",
                        jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapDay: This is a leap day = {0}",
                        jc.IsLeapDay(thisDate.Year, thisDate.Month, thisDate.Day,
                        PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapMonth: This is a leap month = {0}",
                        jc.IsLeapMonth(thisDate.Year, thisDate.Month,
                        PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------
      Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}",
                        jc.IsLeapYear(1370, PersianCalendar.PersianEra));
        //--------------------------------------------------------------------------------

        // Get the 4-digit year for a year whose last two digits are 99. The 4-digit year
        // depends on the current value of the TwoDigitYearMax property.

      Console.WriteLine("ToFourDigitYear:");
      Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}",
                         jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
      jc.TwoDigitYearMax = thisDate.Year;
      Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}",
                        jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
    }
}
// The example displays the following output:
//       ........... Selected Properties .....................
//
//       Eras: era = 1
//
//       TwoDigitYearMax = 99
//
//       ............ Selected Methods .......................
//
//       GetDayOfYear: day = 1
//       GetDaysInMonth: days = 31
//       GetDaysInYear: days = 365
//       GetLeapMonth: leap month (if any) = 0
//       GetMonthsInYear: months in a year = 12
//       IsLeapDay: This is a leap day = False
//       IsLeapMonth: This is a leap month = False
//       IsLeapYear: 1370 is a leap year = True
//       ToFourDigitYear:
//         If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
//         If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999

Imports System.Globalization

Class Sample
    Public Shared Sub Main()
        '--------------------------------------------------------------------------------
        ' Get today's date.
        '--------------------------------------------------------------------------------
        Dim jc As New PersianCalendar()
        Dim thisDate As Date = Date.Now

        '--------------------------------------------------------------------------------
        ' Properties
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "........... Selected Properties ....................." & vbCrLf)
        Console.Write("Eras:")
        Dim era As Integer
        For Each era In jc.Eras
            Console.WriteLine(" era = {0}", era)
        Next era
        '--------------------------------------------------------------------------------
        Console.WriteLine("TwoDigitYearMax = {0}", jc.TwoDigitYearMax)
        '--------------------------------------------------------------------------------
        ' Methods
        '--------------------------------------------------------------------------------
        Console.WriteLine(vbCrLf & _
                          "............ Selected Methods ......................." & vbCrLf)

        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate))
        '--------------------------------------------------------------------------------

        Console.WriteLine("GetDaysInMonth: days = {0}", _
                           jc.GetDaysInMonth(thisDate.Year, _
                                             thisDate.Month, _
                                             PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetDaysInYear: days = {0}", _
                          jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetLeapMonth: leap month (if any) = {0}", _
                           jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("GetMonthsInYear: months in a year = {0}", _
                           jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapDay: This is a leap day = {0}", _
                           jc.IsLeapDay(thisDate.Year, _
                                        thisDate.Month, thisDate.Day, _
                                        PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapMonth: This is a leap month = {0}", _
                           jc.IsLeapMonth(thisDate.Year, _
                                          thisDate.Month, _
                                          PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------
        Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}", _
                           jc.IsLeapYear(1370, PersianCalendar.PersianEra))
        '--------------------------------------------------------------------------------

        ' Get the 4-digit year for a year whose last two digits are 99. The 4-digit year 
        ' depends on the current value of the TwoDigitYearMax property.

        Console.WriteLine("ToFourDigitYear:")
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
        jc.TwoDigitYearMax = thisDate.Year
        Console.WriteLine("  If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", _
                          jc.TwoDigitYearMax, jc.ToFourDigitYear(99))
    End Sub
End Class 
' The example displays output like the following: 
'       ........... Seleted Properties .....................
'       
'       Eras: era = 1
'       
'       TwoDigitYearMax = 99
'       
'       ............ Selected Methods .......................
'       
'       GetDayOfYear: day = 1
'       GetDaysInMonth: days = 31
'       GetDaysInYear: days = 365
'       GetLeapMonth: leap month (if any) = 0
'       GetMonthsInYear: months in a year = 12
'       IsLeapDay: This is a leap day = False
'       IsLeapMonth: This is a leap month = False
'       IsLeapYear: 1370 is a leap year = True
'       ToFourDigitYear:
'         If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
'         If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999

注釈

ペルシア暦は、ペルシア語が話されているほとんどの国/地域で使用されますが、一部の地域では異なる月の名前が使用されます。 ペルシャ暦はイランとアフガニスタンの公式カレンダーであり、カザフスタンやタジキスタンなどの地域の代替カレンダーの1つです。

ペルシア暦は太陽イスラム暦であり、イスラム暦の年から始まり、ムハンマドがメッカからメディナに移行した年である622 C.E.に相当します。

ペルシア暦は太陽年に基づいており、長さは約365日です。 年は四季を経て、地球の中心から見たように、太陽が南半球から北半球に赤道を横切るように見える新年が始まります。 新年は、北半球の春の最初の日であるファルバルディーンの月の最初の日をマークします。 たとえば、2002 年 3 月 21 日の日付は、1381 Anno Persico 年の Farvardeen 月の最初の日に対応します。

ペルシア暦の最初の 6 か月間は 31 日、次の 5 か月はそれぞれ 30 日で、最後の月には共通年に 29 日、閏年に 30 日があります。 閏年とは、33 で除算した場合の残りの部分が 1、5、9、13、17、22、26、または 30 である年です。 たとえば、1370 年は閏年です。33 で割ると残りの 17 が得られます。 33 年のサイクルごとに約 8 年の閏年があります。

イスラム暦太陽天文学アルゴリズム

PersianCalendarクラスでは、観測アルゴリズムではなく、日照太陽天文学アルゴリズムを使用して日付を計算します。 これにより、 PersianCalendar の実装は、イランとアフガニスタン、ペルシャ暦が最も広く使用されている 2 つの国で使用されているペルシャ暦と一致します。

ペルシアカレンダー クラスを使用する

PersianCalendar オブジェクトを使用して、ペルシア暦の日付を計算したり、ペルシア暦の日付をグレゴリオ暦の日付と変換したりできます。 ペルシア暦は、ペルシア語 (アフガニスタン) や中央クルド語 (イラン) などの文化の 既定のカレンダー です。

こちらもご覧ください

• Calendar
• Calendar
• OptionalCalendars
• 予定表の操作