C# Class System.Globalization.CCHijriCalendar

A class encapsulating the functions of the Islamic calendar as static methods.

There is no difference here in using Hijri or Islamic calendar.

The epoch of the Islamic calendar isn't fixed, because we cannot surely say today, when the crescent of the new moon has been observed around the July 16, 622 C.E. Julian. Even today the start and end of the month Ramadan is defined by religous authorities. So the calendar can be offset by two days.

We don't support the offset here, however we changed the epoch from "Calendrical Calculations" to value, that .Net seems to be using.

This class is not compatible to T:System.Globalization.HijriCalendar.

T:CCFixed

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Public Methods

Method	Description
date_difference ( int dayA, int monthA, int yearA, int dayB, int monthB, int yearB ) : int	The method computes the difference between two Islamic dates.
day_from_fixed ( int date ) : int	A method computing the day of the month from a fixed day number.
day_number ( int day, int month, int year ) : int	The method computes the number of the day in the year from a Islamic date.
days_remaining ( int day, int month, int year ) : int	The method computes the days remaining in the given Islamic year from a Islamic date.
dmy_from_fixed ( int &day, int &month, int &year, int date ) : void	The method computes the Islamic year, month, and day from a fixed day number.
fixed_from_dmy ( int day, int month, int year ) : int	The method returns the fixed day number of the given Islamic date.
is_leap_year ( int year ) : bool	The method tells whether the year is a leap year.
month_from_fixed ( int date ) : int	A method computing the Islamic month from a fixed day number.
my_from_fixed ( int &month, int &year, int date ) : void	The method computes the Islamic year and month from a fixed day number.
year_from_fixed ( int date ) : int	The method computes the Islamic year from a fixed day number.

Method Details

date_difference() public static method

The method computes the difference between two Islamic dates.

public static date_difference ( int dayA, int monthA, int yearA, int dayB, int monthB, int yearB ) : int
dayA	int	The integer parameter gives the day of month /// of the first date. ///
monthA	int	The integer parameter gives the Islamic /// month of the first date. ///
yearA	int	The integer parameter gives the Islamic /// year of the first date. ///
dayB	int	The integer parameter gives the day of month /// of the second date. ///
monthB	int	The integer parameter gives the Islamic /// month of the second date. ///
yearB	int	The integer parameter gives the Islamic /// year of the second date. ///
return	int

day_from_fixed() public static method

A method computing the day of the month from a fixed day number.

public static day_from_fixed ( int date ) : int
date	int	An integer specifying the fixed day number. ///
return	int

day_number() public static method

The method computes the number of the day in the year from a Islamic date.

public static day_number ( int day, int month, int year ) : int
day	int	An integer representing the day of the month, /// counting from 1. ///
month	int	An integer representing the month in the /// Islamic year. ///
year	int	An integer representing the Islamic year. ///
return	int

days_remaining() public static method

The method computes the days remaining in the given Islamic year from a Islamic date.

public static days_remaining ( int day, int month, int year ) : int
day	int	An integer representing the day of the month, /// counting from 1. ///
month	int	An integer representing the month in the /// Islamic year. ///
year	int	An integer representing the Islamic year. /// Non-positive values are allowed also. ///
return	int

dmy_from_fixed() public static method

The method computes the Islamic year, month, and day from a fixed day number.

public static dmy_from_fixed ( int &day, int &month, int &year, int date ) : void
day	int	The output value returning the day of the /// month. ///
month	int	The output value giving the Islamic month. ///
year	int	The output value giving the Islamic year. ///
date	int	An integer value specifying the fixed day /// number.
return	void

fixed_from_dmy() public static method

The method returns the fixed day number of the given Islamic date.

public static fixed_from_dmy ( int day, int month, int year ) : int
day	int	An integer representing the day of the month, /// counting from 1. ///
month	int	An integer representing the month in the /// Islamic year. ///
year	int	An integer representing the Islamic year. /// Non-positive values are allowed also. ///
return	int

is_leap_year() public static method

The method tells whether the year is a leap year.

public static is_leap_year ( int year ) : bool
year	int	An integer representing the Islamic year. ///
return	bool

month_from_fixed() public static method

A method computing the Islamic month from a fixed day number.

public static month_from_fixed ( int date ) : int
date	int	An integer specifying the fixed day number. ///
return	int

my_from_fixed() public static method

The method computes the Islamic year and month from a fixed day number.

public static my_from_fixed ( int &month, int &year, int date ) : void
month	int	The output value giving the Islamic month. ///
year	int	The output value giving the Islamic year. ///
date	int	An integer value specifying the fixed day /// number.
return	void

year_from_fixed() public static method

The method computes the Islamic year from a fixed day number.

public static year_from_fixed ( int date ) : int
date	int	The fixed day number. ///
return	int