JulianCalendar Class

Definition

Represents the Julian calendar.

[System.Runtime.InteropServices.ComVisible(true)]
public class JulianCalendar : System.Globalization.Calendar
Inheritance
JulianCalendar
Attributes

Inherited Members

System.Globalization.Calendar

System.Object

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 HebrewCalendar 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

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.

Eras

Gets the list of eras in the JulianCalendar.

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

AddMonths(DateTime, Int32)

Returns a DateTime that is the specified number of months away from the specified DateTime.

AddYears(DateTime, Int32)

Returns a DateTime that is the specified number of years away from the specified DateTime.

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.

GetDaysInYear(Int32, Int32)

Returns the number of days in the specified year in the specified era.

GetEra(DateTime)

Returns the era in the specified DateTime.

GetLeapMonth(Int32, Int32)

Calculates the leap month for a specified year and era.

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.

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.

IsLeapMonth(Int32, Int32, Int32)

Determines whether the specified month in the specified year in the specified era is a leap month.

IsLeapYear(Int32, Int32)

Determines whether the specified year in the specified era is a leap year.

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.

ToFourDigitYear(Int32)

Converts the specified year to a four-digit year by using the TwoDigitYearMax property to determine the appropriate century.