HijriCalendar Class
Represents the Hijri calendar.
Assembly: mscorlib (in mscorlib.dll)
The HijriCalendar type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | AlgorithmType | Gets a value that indicates whether the current calendar is solar-based, lunar-based, or a combination of both. (Overrides Calendar::AlgorithmType.) |
![]() | Eras | Gets the list of eras in the HijriCalendar. (Overrides Calendar::Eras.) |
![]() | HijriAdjustment | Gets or sets the number of days to add or subtract from the calendar to accommodate the variances in the start and the end of Ramadan and to accommodate the date difference between countries/regions. |
![]() | IsReadOnly | Gets a value indicating whether this Calendar object is read-only. (Inherited from Calendar.) |
![]() | MaxSupportedDateTime | Gets the latest date and time supported by this calendar. (Overrides Calendar::MaxSupportedDateTime.) |
![]() | MinSupportedDateTime | Gets the earliest date and time supported by this calendar. (Overrides Calendar::MinSupportedDateTime.) |
![]() | TwoDigitYearMax | Gets or sets the last year of a 100-year range that can be represented by a 2-digit year. (Overrides Calendar::TwoDigitYearMax.) |
| Name | Description | |
|---|---|---|
![]() | AddDays | Returns a DateTime that is the specified number of days away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddHours | Returns a DateTime that is the specified number of hours away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddMilliseconds | Returns a DateTime that is the specified number of milliseconds away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddMinutes | Returns a DateTime that is the specified number of minutes away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddMonths | Returns a DateTime that is the specified number of months away from the specified DateTime. (Overrides Calendar::AddMonths(DateTime, Int32).) |
![]() | AddSeconds | Returns a DateTime that is the specified number of seconds away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddWeeks | Returns a DateTime that is the specified number of weeks away from the specified DateTime. (Inherited from Calendar.) |
![]() | AddYears | Returns a DateTime that is the specified number of years away from the specified DateTime. (Overrides Calendar::AddYears(DateTime, Int32).) |
![]() | Clone | Creates a new object that is a copy of the current Calendar object. (Inherited from Calendar.) |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetDayOfMonth | Returns the day of the month in the specified DateTime. (Overrides Calendar::GetDayOfMonth(DateTime).) |
![]() | GetDayOfWeek | Returns the day of the week in the specified DateTime. (Overrides Calendar::GetDayOfWeek(DateTime).) |
![]() | GetDayOfYear | Returns the day of the year in the specified DateTime. (Overrides Calendar::GetDayOfYear(DateTime).) |
![]() | GetDaysInMonth(Int32, Int32) | Returns the number of days in the specified month and year of the current era. (Inherited from Calendar.) |
![]() | GetDaysInMonth(Int32, Int32, Int32) | Returns the number of days in the specified month of the specified year and era. (Overrides Calendar::GetDaysInMonth(Int32, Int32, Int32).) |
![]() | GetDaysInYear(Int32) | Returns the number of days in the specified year of the current era. (Inherited from Calendar.) |
![]() | GetDaysInYear(Int32, Int32) | Returns the number of days in the specified year and era. (Overrides Calendar::GetDaysInYear(Int32, Int32).) |
![]() | GetEra | Returns the era in the specified DateTime. (Overrides Calendar::GetEra(DateTime).) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetHour | Returns the hours value in the specified DateTime. (Inherited from Calendar.) |
![]() | GetLeapMonth(Int32) | Calculates the leap month for a specified year. (Inherited from Calendar.) |
![]() | GetLeapMonth(Int32, Int32) | Calculates the leap month for a specified year and era. (Overrides Calendar::GetLeapMonth(Int32, Int32).) |
![]() | GetMilliseconds | Returns the milliseconds value in the specified DateTime. (Inherited from Calendar.) |
![]() | GetMinute | Returns the minutes value in the specified DateTime. (Inherited from Calendar.) |
![]() | GetMonth | Returns the month in the specified DateTime. (Overrides Calendar::GetMonth(DateTime).) |
![]() | GetMonthsInYear(Int32) | Returns the number of months in the specified year in the current era. (Inherited from Calendar.) |
![]() | GetMonthsInYear(Int32, Int32) | Returns the number of months in the specified year and era. (Overrides Calendar::GetMonthsInYear(Int32, Int32).) |
![]() | GetSecond | Returns the seconds value in the specified DateTime. (Inherited from Calendar.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | GetWeekOfYear | Returns the week of the year that includes the date in the specified DateTime value. (Inherited from Calendar.) |
![]() | GetYear | Returns the year in the specified DateTime. (Overrides Calendar::GetYear(DateTime).) |
![]() | IsLeapDay(Int32, Int32, Int32) | Determines whether the specified date in the current era is a leap day. (Inherited from Calendar.) |
![]() | IsLeapDay(Int32, Int32, Int32, Int32) | Determines whether the specified date is a leap day. (Overrides Calendar::IsLeapDay(Int32, Int32, Int32, Int32).) |
![]() | IsLeapMonth(Int32, Int32) | Determines whether the specified month in the specified year in the current era is a leap month. (Inherited from Calendar.) |
![]() | IsLeapMonth(Int32, Int32, Int32) | Determines whether the specified month in the specified year and era is a leap month. (Overrides Calendar::IsLeapMonth(Int32, Int32, Int32).) |
![]() | IsLeapYear(Int32) | Determines whether the specified year in the current era is a leap year. (Inherited from Calendar.) |
![]() | IsLeapYear(Int32, Int32) | Determines whether the specified year in the specified era is a leap year. (Overrides Calendar::IsLeapYear(Int32, Int32).) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32) | Returns a DateTime that is set to the specified date and time in the current era. (Inherited from Calendar.) |
![]() | ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32) | Returns a DateTime that is set to the specified date, time, and era. (Overrides Calendar::ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32).) |
![]() | ToFourDigitYear | Converts the specified year to a four-digit year by using the TwoDigitYearMax property to determine the appropriate century. (Overrides Calendar::ToFourDigitYear(Int32).) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The Hijri calendar recognizes one era: A.H. (Latin "Anno Hegirae", which means "the year of the migration," in reference to the migration of Muhammad (PBUH) from Mecca).
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.
The Hijri calendar has 12 months with 29 to 30 days each:
GetMonth value | Month | Days in common years | Days in leap years |
|---|---|---|---|
1 | محرم (Muharram) | 30 | 30 |
2 | صفر (Safar) | 29 | 29 |
3 | ربيع الاول (Rabi I) | 30 | 30 |
4 | ربيع الثاني (Rabi II) | 29 | 29 |
5 | جمادى الاولى (Jumada I) | 30 | 30 |
6 | جمادى الثانية (Jumada II) | 29 | 29 |
7 | رجب (Rajab) | 30 | 30 |
8 | شعبان (Shaban) | 29 | 29 |
9 | رمضان (Ramadan) | 30 | 30 |
10 | شوال (Shawwal) | 29 | 29 |
11 | ذو القعدة (Zulkadah) | 30 | 30 |
12 | ذو الحجة (Zulhijjah) | 29 | 30 |
Ramadan, the month of fasting in the Muslim world, officially starts and ends according to a decree that is based on the observation of the new moon. Therefore, the number of days in Shaban and the number of days in Ramadan vary.
The date January 1, 2001 A.D. in the Gregorian calendar is roughly equivalent to the sixth day of Shawwal in the year 1421 A.H. in the Hijri calendar.
This implementation of the HijriCalendar class adjusts the calendar date by adding or subtracting a value from zero to two days to accommodate the variances in the start and the end of Ramadan and to accommodate the date difference between countries/regions. That value is stored in the HijriAdjustment property. If HijriAdjustment is not set explicitly, it derives its value from the settings in the regional and language options portion of Control Panel and is stored in the registry value HKEY_CURRENT_USER\Control Panel\International\AddHijriDate. However, that information can change during the life of the AppDomain. The HijriCalendar class does not detect changes in the system settings automatically.
Each CultureInfo supports a set of calendars. The Calendar property returns the default calendar for the culture, and the OptionalCalendars property returns an array containing all the calendars supported by the culture. To change the calendar used by a CultureInfo, the application should set the Calendar property of CultureInfo::DateTimeFormat to a new Calendar.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.




