GregorianDate Structure

Represents a calendar date in the Gregorian calendar. A GregorianDate does not include a TimeStandard as JulianDate does. However, without explicitly specifying a TimeStandard for the date, the GregorianDate is assumed to be represented in CoordinatedUniversalTime. GregorianDate is also capable of representing leap seconds, which are represented as the second measured from 60 to 61. In this case, the GregorianDate is assumed to be the CoordinatedUniversalTime represented in InternationalAtomicTime which can represent leap seconds exactly.

Namespace: AGI.Foundation.Time
Assembly: AGI.Foundation.Core (in AGI.Foundation.Core.dll) Version: 24.2.419.0 (24.2.419.0)

Syntax

C++

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public struct GregorianDate : IComparable<GregorianDate>, 
	IComparable, IEquatable<GregorianDate>

Public Structure GregorianDate
	Implements IComparable(Of GregorianDate), IComparable, 
	IEquatable(Of GregorianDate)

public value class GregorianDate : IComparable<GregorianDate>, 
	IComparable, IEquatable<GregorianDate>

[<SealedAttribute>]
type GregorianDate =  
    struct
        interface IComparable<GregorianDate>
        interface IComparable
        interface IEquatable<GregorianDate>
    end

The GregorianDate type exposes the following members.

Constructors

	Name	Description
	GregorianDate(DateTime)	Initializes a GregorianDate from the provided DateTime. If the provided DateTime is in local time, it is converted to UTC.
	GregorianDate(JulianDate)	Initializes a GregorianDate from the provided JulianDate. The new GregorianDate will be in the CoordinatedUniversalTime (UTC) time standard.
	GregorianDate(Int32, Double)	Initializes a GregorianDate from the provided values. The fractional portion of the daysOfYear will be converted into hours, minutes, and seconds.
	GregorianDate(JulianDate, TimeStandard)	Initializes a GregorianDate from the provided JulianDate. The new GregorianDate will be in the provided TimeStandard.
	GregorianDate(Int32, Int32, Int32)	Initializes a GregorianDate from the provided values. The remaining values are assumed to be zero.
	GregorianDate(Int32, Int32, Int32, Int32, Double)	Initializes a GregorianDate from the provided values.
	GregorianDate(Int32, Int32, Int32, Int32, Int32, Double)	Initializes a GregorianDate from the provided values.

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Properties

	Name	Description
	Day	Gets the day of the month (in the range 1 through the number of days in the month).
	DayOfWeek	Gets the day of the week represented by this instance.
	DayOfYear	Gets the day of the year represented by this instance.
	Hour	Gets the hour (in the range 0 through 23).
	JulianSecondsOfDay	Gets the corresponding seconds past noon for this instance.
	Minute	Gets the minute (in the range 0 through 59).
	Month	Gets the month of the year (in the range 1 through 12).
	Now	Gets the GregorianDate that represents the current date and time.
	Second	Gets the second, including fractional seconds (in the range 0.0 up to, but not including, 61.0). A value between 60.0 and 61.0 indicates a leap second.
	SecondsOfDay	Gets the corresponding seconds past midnight for this instance.
	Year	Gets the year.

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Methods

	Name	Description
	AddDays	Adds the specified number of days to this date and returns the new date.
	AddHours	Adds the specified number of hours to this date and returns the new date.
	AddMinutes	Adds the specified number of minutes to this date and returns the new date.
	AddSeconds	Adds the specified number of seconds to this date and returns the new date.
	CompareTo(GregorianDate)	Compares this instance with another instance of the same type.
	CompareTo(Object)	Compares this instance with another instance of the same type.
	Equals(GregorianDate)	Indicates whether another instance of this type is exactly equal to this instance.
	Equals(Object)	Indicates whether another object is exactly equal to this instance. (Overrides ValueTypeEquals(Object).)
	GetHashCode	Returns a hash code for this instance, which is suitable for use in hashing algorithms and data structures like a hash table. (Overrides ValueTypeGetHashCode.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsValid	Indicates whether the date values provided are a valid representation of a date and time.
	Parse(String)	Converts the specified string representation of a date and time to its GregorianDate equivalent. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information. However, this will handle three common ISO8601 formats: the extended format "YYYY-MM-DDThh:mm:ss.sZ" The "day of year" equivalent "YYYY-DDDThh:mm:ss.sZ" The basic format "YYYYMMDDThhmmss.sZ"
	Parse(String, IFormatProvider)	Converts the specified string representation of a date and time to its GregorianDate equivalent using the specified culture-specific format information. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information. However, this will handle three common ISO8601 formats: the extended format "YYYY-MM-DDThh:mm:ss.sZ" The "day of year" equivalent "YYYY-DDDThh:mm:ss.sZ" The basic format "YYYYMMDDThhmmss.sZ"
	ParseExact(String, String, IFormatProvider)	Converts the specified string representation of a date and time to its GregorianDate equivalent using the specified format and culture-specific format information. The format of the string representation must match the specified format exactly. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information.
	ParseExact(String, String, IFormatProvider)	Converts the specified string representation of a date and time to its GregorianDate equivalent using the specified format and culture-specific format information. The format of the string representation must match the specified format exactly. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information.
	RoundSeconds(Int32)	Rounds this instance to the specified number of decimal digits in the seconds, rolling over to minutes, hours, days, etc. as necessary. This instance is assumed to express a time in the CoordinatedUniversalTime (UTC) time standard so the Second will be allowed to go above 60 during a leap second.
	RoundSeconds(Int32, TimeStandard)	Rounds this instance to the specified number of decimal digits in the seconds, rolling over to minutes, hours, days, etc. as necessary. If the specified timeStandard is CoordinatedUniversalTime, (UTC), the seconds will be allowed to go above 60 during a leap second. For any other time standard, the Second will be below 60.
	SubtractDays	Subtracts the specified number of days from this date and returns the new date.
	SubtractHours	Subtracts the specified number of hours from this date and returns the new date.
	SubtractMinutes	Subtracts the specified number of minutes from this date and returns the new date.
	SubtractSeconds	Subtracts the specified number of seconds from this date and returns the new date.
	ToDateTime	Convert this GregorianDate to a DateTime. The DateTime will be in UTC.
	ToIso8601String	Converts the value of this instance to its equivalent ISO8601 extended string representation, with fractional seconds represented to 15 digits.
	ToIso8601String(Iso8601Format)	Converts the value of this instance to its equivalent ISO8601 string representation, with fractional seconds represented to 15 digits.
	ToIso8601String(Iso8601Format, Int32)	Converts the value of this instance to its equivalent ISO8601 string representation, with fractional seconds represented to the specified number of digits.
	ToJulianDate	Convert this GregorianDate to a JulianDate. The time standard will be CoordinatedUniversalTime (UTC), unless this GregorianDate represents the instant of a leap second, in which case the JulianDate will be in InternationalAtomicTime (TAI).
	ToJulianDate(TimeStandard)	Convert this GregorianDate to a JulianDate. The GregorianDate is assumed to specify a time in the specified TimeStandard.
	ToLongDateString	Converts the value of this instance to its equivalent long date string representation.
	ToLongTimeString	Converts the value of this instance to its equivalent long time string representation.
	ToShortDateString	Converts the value of this instance to its equivalent short date string representation.
	ToShortTimeString	Converts the value of this instance to its equivalent short time string representation.
	ToString	Converts the value of this instance to its equivalent string representation. (Overrides ValueTypeToString.)
	ToString(IFormatProvider)	Converts the value of this instance to its equivalent string representation using the specified culture-specific format information.
	ToString(String)	Converts the value of this instance to its equivalent string representation using the specified format.
	ToString(String, IFormatProvider)	Converts the value of this instance to its equivalent string representation using the specified format and culture-specific format information.
	TryParse(String, GregorianDate)	Converts the specified string representation of a date and time to its GregorianDate equivalent. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information. However, this method handles three common ISO8601 formats: the extended format "YYYY-MM-DDThh:mm:ss.sZ" The "day of year" equivalent "YYYY-DDDThh:mm:ss.sZ" The basic format "YYYYMMDDThhmmss.sZ"
	TryParse(String, IFormatProvider, GregorianDate)	Converts the specified string representation of a date and time to its GregorianDate equivalent using the specified culture-specific format information. Note: GregorianDate is always assumed to be in UTC. You cannot parse strings containing time zone information. However, this method handles three common ISO8601 formats: the extended format "YYYY-MM-DDThh:mm:ss.sZ" The "day of year" equivalent "YYYY-DDDThh:mm:ss.sZ" The basic format "YYYYMMDDThhmmss.sZ"

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Operators

	Name	Description
	Equality	Returns if the two instances are exactly equal.
	GreaterThan	Returns if left is greater than right.
	GreaterThanOrEqual	Returns if left is greater than or equal to right.
	Inequality	Returns if the two instances are not exactly equal.
	LessThan	Returns if left is less than right.
	LessThanOrEqual	Returns if left is less than or equal to right.

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Fields

	Name	Description
	MaxValue	Represents the largest possible value of GregorianDate. Corresponds to MaxValue.
	MinValue	Represents the smallest possible value of GregorianDate. Corresponds to MinValue.

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Reference

AGI.Foundation.Time Namespace