JulianCalendar Class

Definition

Namespace:

System.Globalization

Assembly:

System.Runtime.dll

Source:

JulianCalendar.cs

Represents the Julian calendar.

public ref class JulianCalendar : System::Globalization::Calendar

public class JulianCalendar : System.Globalization.Calendar

type JulianCalendar = class
    inherit Calendar

Public Class JulianCalendar
Inherits Calendar

Inheritance

Object

Calendar

JulianCalendar

Remarks

In 45 B.C., Julius Caesar ordered a calendar reform, which resulted in the calendar called the Julian calendar. The Julian calendar is the predecessor of the Gregorian calendar.

Note

For information about using the JulianCalendar class and the other calendar classes in the .NET Framework, see Working with Calendars.

The JulianCalendar class recognizes only the current era.

Unlike the Gregorian calendar, the Julian calendar defines a leap year as a year that is evenly divisible by four with no exceptions. Therefore, the calendar is inaccurate by one day every 128 years. A common year has 365 days and a leap year has 366 days.

Like the Gregorian calendar, the Julian calendar has 12 months with 28 to 31 days each: January (31 days), February (28 or 29 days), March (31 days), April (30 days), May (31 days), June (30 days), July (31 days), August (31 days), September (30 days), October (31 days), November (30 days), and December (31 days). February has 29 days during leap years and 28 during common years.

The date January 1, 2001 A.D. in the Gregorian calendar is equivalent to the 19th day of December in the year 2000 A.D. in the Julian calendar.

Currently, the JulianCalendar is not used by any of the cultures supported by the CultureInfo class. Therefore, the JulianCalendar class can be used only to calculate dates in the Julian calendar.

Each CultureInfo object 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.

Constructors

JulianCalendar()

Initializes a new instance of the JulianCalendar class.

Fields

CurrentEra	Represents the current era of the current calendar. The value of this field is 0. (Inherited from Calendar)
JulianEra	Represents the current era. This field is constant.

Properties

AlgorithmType	Gets a value that indicates whether the current calendar is solar-based, lunar-based, or a combination of both.
DaysInYearBeforeMinSupportedYear	Gets the number of days in the year that precedes the year that is specified by the MinSupportedDateTime property. (Inherited from Calendar)
Eras	Gets the list of eras in the JulianCalendar.
IsReadOnly	Gets a value indicating whether this Calendar object is read-only. (Inherited from Calendar)
MaxSupportedDateTime	Gets the latest date and time supported by the JulianCalendar class.
MinSupportedDateTime	Gets the earliest date and time supported by the JulianCalendar class.
TwoDigitYearMax	Gets or sets the last year of a 100-year range that can be represented by a 2-digit year.

Methods

AddDays(DateTime, Int32)	Returns a DateTime that is the specified number of days away from the specified DateTime. (Inherited from Calendar)
AddHours(DateTime, Int32)	Returns a DateTime that is the specified number of hours away from the specified DateTime. (Inherited from Calendar)
AddMilliseconds(DateTime, Double)	Returns a DateTime that is the specified number of milliseconds away from the specified DateTime. (Inherited from Calendar)
AddMinutes(DateTime, Int32)	Returns a DateTime that is the specified number of minutes away from the specified DateTime. (Inherited from Calendar)
AddMonths(DateTime, Int32)	Returns a DateTime that is the specified number of months away from the specified DateTime.
AddSeconds(DateTime, Int32)	Returns a DateTime that is the specified number of seconds away from the specified DateTime. (Inherited from Calendar)
AddWeeks(DateTime, Int32)	Returns a DateTime that is the specified number of weeks away from the specified DateTime. (Inherited from Calendar)
AddYears(DateTime, Int32)	Returns a DateTime that is the specified number of years away from the specified DateTime.
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)
GetDayOfMonth(DateTime)	Returns the day of the month in the specified DateTime.
GetDayOfWeek(DateTime)	Returns the day of the week in the specified DateTime.
GetDayOfYear(DateTime)	Returns the day of the year in the specified DateTime.
GetDaysInMonth(Int32, Int32, Int32)	Returns the number of days in the specified month in the specified year in the specified era.
GetDaysInMonth(Int32, Int32)	Returns the number of days in the specified month and year of the current era. (Inherited from Calendar)
GetDaysInYear(Int32, Int32)	Returns the number of days in the specified year in the specified era.
GetDaysInYear(Int32)	Returns the number of days in the specified year of the current era. (Inherited from Calendar)
GetEra(DateTime)	Returns the era in the specified DateTime.
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetHour(DateTime)	Returns the hours value in the specified DateTime. (Inherited from Calendar)
GetLeapMonth(Int32, Int32)	Calculates the leap month for a specified year and era.
GetLeapMonth(Int32)	Calculates the leap month for a specified year. (Inherited from Calendar)
GetMilliseconds(DateTime)	Returns the milliseconds value in the specified DateTime. (Inherited from Calendar)
GetMinute(DateTime)	Returns the minutes value in the specified DateTime. (Inherited from Calendar)
GetMonth(DateTime)	Returns the month in the specified DateTime.
GetMonthsInYear(Int32, Int32)	Returns the number of months in the specified year in the specified era.
GetMonthsInYear(Int32)	Returns the number of months in the specified year in the current era. (Inherited from Calendar)
GetSecond(DateTime)	Returns the seconds value in the specified DateTime. (Inherited from Calendar)
GetType()	Gets the Type of the current instance. (Inherited from Object)
GetWeekOfYear(DateTime, CalendarWeekRule, DayOfWeek)	Returns the week of the year that includes the date in the specified DateTime value. (Inherited from Calendar)
GetYear(DateTime)	Returns the year in the specified DateTime.
IsLeapDay(Int32, Int32, Int32, Int32)	Determines whether the specified date in the specified era is a leap day.
IsLeapDay(Int32, Int32, Int32)	Determines whether the specified date in the current era is a leap day. (Inherited from Calendar)
IsLeapMonth(Int32, Int32, Int32)	Determines whether the specified month in the specified year in the specified era is a leap month.
IsLeapMonth(Int32, Int32)	Determines whether the specified month in the specified year in the current era is a leap month. (Inherited from Calendar)
IsLeapYear(Int32, Int32)	Determines whether the specified year in the specified era is a leap year.
IsLeapYear(Int32)	Determines whether the specified year in the current era is a leap year. (Inherited from Calendar)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32)	Returns a DateTime that is set to the specified date and time in the specified era.
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)
ToFourDigitYear(Int32)	Converts the specified year to a four-digit year by using the TwoDigitYearMax property to determine the appropriate century.
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• Calendar
• GregorianCalendar
• Calendar
• OptionalCalendars
• Working with Calendars