Class to handle Julian days and provide respective Earth Orientation Parameters (EOP). More...

#include "julian-date.h"

Public Member Functions
	JulianDate (const std::string &date, TimeSystem ts=DateTime::UTC)
	JulianDate constructor receiving time as a Gregorian date. More...

	JulianDate (double jd)
	JulianDate constructor receiving the Julian days as parameter. More...

	JulianDate (uint32_t days, uint32_t ms_day)
	JulianDate constructor receiving time since Unix/POSIX epoch. More...

	JulianDate (void)
	Default constructor. More...

DateTime	GetDateTime (TimeSystem ts) const
	Get the Gregorian calendar date in the specified time system. More...

DateTime	GetDateTime (void) const
	Get the Gregorian calendar date in current time system. More...

double	GetDouble (TimeSystem ts=DateTime::UTC) const
	GetDouble Get the Julian days. More...

double	GetGmst (void) const
	Retrieve the Greenwich Mean Sidereal Time. More...

double	GetOmegaEarth (void) const
	Retrieve Earth's angular velocity. More...

std::pair< double, double >	GetPolarMotion (void) const
	Retrieve the polar motion cofficients measured/predicted. More...

bool	operator!= (const JulianDate &jd) const
	operator != (compare Julian dates). More...

JulianDate	operator+ (const Time &t) const
	operator + (positive time adjustment). More...

void	operator+= (const Time &t)
	operator += (positive time adjustment). More...

Time	operator- (const JulianDate &jd) const
	operator - (time between Julian dates). More...

JulianDate	operator- (const Time &t) const
	operator - (negative time adjustment). More...

void	operator-= (const Time &t)
	operator -= (negative time adjustment). More...

bool	operator< (const JulianDate &jd) const
	operator < (compare Julian dates). More...

bool	operator<= (const JulianDate &jd) const
	operator <= (compare Julian dates). More...

bool	operator== (const JulianDate &jd) const
	operator == (compare Julian dates). More...

bool	operator> (const JulianDate &jd) const
	operator > (compare Julian dates). More...

bool	operator>= (const JulianDate &jd) const
	operator >= (compare Julian dates). More...

void	SetDate (const std::string &date, TimeSystem ts=DateTime::UTC)
	Set Julian days using time in Gregorian calendar date. More...

void	SetDate (double jd)
	Set the Julian days. More...

void	SetDate (uint32_t days, uint32_t ms_day)
	Set Julian days using the time since Unix/POSIX epoch. More...

std::string	ToString (TimeSystem ts) const
	Get the string representation of the Gregorian calendar date in time system ts. More...

std::string	ToString (void) const
	Get the string representation of the Gregorian calendar date. More...

Static Public Attributes
static const uint32_t	DayToMs = HourToMs * 24
	milliseconds in a day More...

static const uint32_t	HourToMs = 3600000
	milliseconds in an hour More...

static const uint32_t	J2000Epoch = 2451545
	1 Jan 2000, 12h More...

static const uint32_t	MaxYear = 2099
	Maximum year supported. More...

static const uint32_t	MinYear = 1992
	Minimum year supported. More...

static const uint32_t	Posix1992 = 8035
	1 Jan 1992 (POSIX days) More...

static const double	PosixEpoch = 2440587.5
	1 Jan 1970, 0h More...

static const uint32_t	PosixYear = 1970
	POSIX/Unix epoch year. More...

static const Time	TaiToGps = MilliSeconds(19000)
	offset from TAI to GPST More...

static const Time	TtToTai = MilliSeconds(32184)
	offset from TT to TAI More...

Private Types
typedef DateTime::TimeSystem	TimeSystem
	equivalent to C++11 using TimeSystem = DateTime::TimeSystem. More...

Private Member Functions
DateTime	GregorianDate (void) const
	Convert into Gregorian calendar. More...

Time	OffsetFromUtc (void) const
	Returns the offset from UTC. More...

Time	OffsetToUtc (void) const
	Returns the offset to UTC. More...

Static Private Member Functions
static Time	Dut1 (uint32_t daysInPosix)
	Retrieve the DUT1 (UT1 - UTC) value for a given day. More...

static DateTime	GregorianDate (uint32_t days, uint32_t ms_day)
	Convert Julian days into Gregorian calendar. More...

static bool	IsLeapYear (uint32_t year)
	Check if it is a leap year. More...

static Time	OffsetFromUtc (uint32_t daysInPosix, TimeSystem ts)
	Returns the offset from UTC for a given time. More...

static Time	OffsetToUtc (uint32_t daysInPosix, uint32_t ms_day, TimeSystem ts)
	Returns the offset to UTC for a given time. More...

static Time	TaiMinusUtc (uint32_t daysInPosix)
	The difference between TAI and UTC time systems. More...

Private Attributes
uint32_t	m_days
	full days since epoch. More...

uint32_t	m_ms_day
	milliseconds of the day. More...

TimeSystem	m_time_scale
	external time system. More...

Friends
std::ostream &	operator<< (std::ostream &os, const JulianDate &jd)
	operator << (print as GregorianDate). More...

Detailed Description

Class to handle Julian days and provide respective Earth Orientation Parameters (EOP).

This class provides an easy interface to convert between Julian days and Gregorian dates in UTC, UT1, TAI, TT, GPST, and Unix/POSIX time, and, using IersData class, provides the respective Earth Orientation Parameters (EOP). The EOP parameters available are: DUT1, Earth's angular velocity, and Greenwich Mean Sidereal Time (GMST).

IMPORTANT: Complete EOP values are only available since 1 January 1992, therefore, this class only supports dates from 1 January 1992 up to 31 December 2099.

Definition at line 77 of file julian-date.h.

Member Typedef Documentation

◆ TimeSystem

typedef DateTime::TimeSystem ns3::JulianDate::TimeSystem

private

equivalent to C++11 using TimeSystem = DateTime::TimeSystem.

Definition at line 80 of file julian-date.h.

Constructor & Destructor Documentation

◆ JulianDate() [1/4]

ns3::JulianDate::JulianDate ( void )

Default constructor.

Definition at line 85 of file julian-date.cc.

References m_days, m_ms_day, m_time_scale, MinYear, PosixYear, and ns3::DateTime::UTC.

◆ JulianDate() [2/4]

ns3::JulianDate::JulianDate ( double jd )

JulianDate constructor receiving the Julian days as parameter.

This constructor has lower precision as there may be some inaccuracy at the millisecond level due to double type limited precision.

Parameters

jd	The Julian days.

Definition at line 93 of file julian-date.cc.

References SetDate().

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◆ JulianDate() [3/4]

ns3::JulianDate::JulianDate	(	uint32_t	days,
		uint32_t	ms_day
	)

JulianDate constructor receiving time since Unix/POSIX epoch.

Parameters

days	Full days since Unix/POSIX epoch (1 January 1970, 0h).
ms_day	Milliseconds of the day (since midnight).

Definition at line 98 of file julian-date.cc.

References SetDate().

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◆ JulianDate() [4/4]

ns3::JulianDate::JulianDate	(	const std::string &	date,
		TimeSystem	ts = `DateTime::UTC`
	)

JulianDate constructor receiving time as a Gregorian date.

Parameters

date	Gregorian calendar date.
ts	Time system of the date (UTC, UT1, TAI, TT or GPST).

Definition at line 103 of file julian-date.cc.

References SetDate().

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Member Function Documentation

◆ Dut1()

Time ns3::JulianDate::Dut1 ( uint32_t daysInPosix )

staticprivate

Retrieve the DUT1 (UT1 - UTC) value for a given day.

Parameters

daysInPosix number of full days since Unix/POSIX epoch.

Returns: the DUT1 measured/predicted as of IERS Bulletin A.

Definition at line 420 of file julian-date.cc.

References ns3::IersData::EopValues, and Posix1992.

Referenced by GetGmst(), OffsetFromUtc(), and OffsetToUtc().

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◆ GetDateTime() [1/2]

DateTime ns3::JulianDate::GetDateTime ( TimeSystem ts ) const

Get the Gregorian calendar date in the specified time system.

Returns: a DateTime struct with the Gregorian calendar date.

Definition at line 127 of file julian-date.cc.

References m_days, and OffsetFromUtc().

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◆ GetDateTime() [2/2]

DateTime ns3::JulianDate::GetDateTime ( void ) const

Get the Gregorian calendar date in current time system.

Returns: a DateTime struct with the Gregorian calendar date and time.

Definition at line 121 of file julian-date.cc.

References GregorianDate().

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◆ GetDouble()

double ns3::JulianDate::GetDouble ( TimeSystem ts = DateTime::UTC ) const

GetDouble Get the Julian days.

Parameters

ts	Time system to consider for conversion (UTC by default).

Returns: the Julian days in time system ts.

Definition at line 109 of file julian-date.cc.

References DayToMs, m_days, m_ms_day, OffsetFromUtc(), ns3::DateTime::POSIX, and PosixEpoch.

Referenced by GetGmst().

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◆ GetGmst()

double ns3::JulianDate::GetGmst ( void ) const

Retrieve the Greenwich Mean Sidereal Time.

Returns: the GMST using DUT1 values measured/predicted as IERS' Bulletin A.

@TODO interpolate DUT1 between daily values

@TODO evaluate which formula is more accurate

Definition at line 183 of file julian-date.cc.

References Dut1(), GetDouble(), gstime(), and m_days.

Referenced by ns3::SatSGP4MobilityModel::TemeToPef().

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◆ GetOmegaEarth()

double ns3::JulianDate::GetOmegaEarth ( void ) const

Retrieve Earth's angular velocity.

Returns: the Earth's angular velocity.

Definition at line 170 of file julian-date.cc.

References DayToMs, ns3::IersData::EopValues, m_days, and Posix1992.

Referenced by ns3::SatSGP4MobilityModel::rvTemeTovItrf().

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◆ GetPolarMotion()

std::pair< double, double > ns3::JulianDate::GetPolarMotion ( void ) const

Retrieve the polar motion cofficients measured/predicted.

Returns: the polar motion values measured/predicted as IERS' Bulletin A.

Definition at line 157 of file julian-date.cc.

References ns3::IersData::EopValues, m_days, and Posix1992.

Referenced by ns3::SatSGP4MobilityModel::PefToItrf().

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◆ GregorianDate() [1/2]

DateTime ns3::JulianDate::GregorianDate	(	uint32_t	days,
		uint32_t	ms_day
	)

staticprivate

Convert Julian days into Gregorian calendar.

Parameters

days	Full Julian days.
ms_day	Milliseconds of the day (since midnight).

Returns: a DateTime struct with the date.

Definition at line 435 of file julian-date.cc.

References ns3::DateTime::day, ns3::DateTime::hours, IsLeapYear(), ns3::DateTime::millisecs, ns3::DateTime::minutes, MinYear, ns3::DateTime::month, Posix1992, ns3::DateTime::seconds, and ns3::DateTime::year.

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◆ GregorianDate() [2/2]

DateTime ns3::JulianDate::GregorianDate ( void ) const

private

Convert into Gregorian calendar.

Returns: a DateTime struct with the date.

Definition at line 429 of file julian-date.cc.

References m_days, and m_ms_day.

Referenced by GetDateTime(), and ToString().

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◆ IsLeapYear()

bool ns3::JulianDate::IsLeapYear ( uint32_t year )

staticprivate

Check if it is a leap year.

This function assumes that the year is in the [1992, 2099] range.

Parameters

year	the year to check.

Returns: a boolean indicating whether it is a leap year.

Definition at line 401 of file julian-date.cc.

Referenced by GregorianDate().

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◆ OffsetFromUtc() [1/2]

Time ns3::JulianDate::OffsetFromUtc	(	uint32_t	daysInPosix,
		TimeSystem	ts
	)

staticprivate

Returns the offset from UTC for a given time.

Parameters

daysInPosix	Full days since Unix/POSIX epoch.
ts	Time system from.

Returns: the offset from UTC.

Definition at line 487 of file julian-date.cc.

References Dut1(), ns3::DateTime::GPST, ns3::DateTime::TAI, TaiMinusUtc(), TaiToGps, ns3::DateTime::TT, TtToTai, and ns3::DateTime::UT1.

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◆ OffsetFromUtc() [2/2]

Time ns3::JulianDate::OffsetFromUtc ( void ) const

private

Returns the offset from UTC.

Returns the offset from UTC to its internal time system as of its internal time.

Returns: the offset from UTC.

Definition at line 481 of file julian-date.cc.

References m_days, and m_time_scale.

Referenced by GetDateTime(), GetDouble(), and ToString().

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◆ OffsetToUtc() [1/2]

Time ns3::JulianDate::OffsetToUtc	(	uint32_t	daysInPosix,
		uint32_t	ms_day,
		TimeSystem	ts
	)

staticprivate

Returns the offset to UTC for a given time.

Parameters

daysInPosix	Full days since Unix/POSIX epoch.
ms_day	Milliseconds of the day (since midnight).
ts	Time system to.

Returns: the offset to UTC.

Definition at line 520 of file julian-date.cc.

References Dut1(), ns3::DateTime::GPST, ns3::DateTime::POSIX, ns3::DateTime::TAI, TaiMinusUtc(), TaiToGps, ns3::DateTime::TT, TtToTai, ns3::DateTime::UT1, and ns3::DateTime::UTC.

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◆ OffsetToUtc() [2/2]

Time ns3::JulianDate::OffsetToUtc ( void ) const

private

Returns the offset to UTC.

Returns the offset to UTC from its internal time system as of its internal time.

Returns: the offset to UTC.

Definition at line 514 of file julian-date.cc.

References m_days, m_ms_day, and m_time_scale.

Referenced by SetDate().

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◆ operator!=()

bool ns3::JulianDate::operator!= ( const JulianDate & jd ) const

operator != (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is different.

Definition at line 380 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator+()

JulianDate ns3::JulianDate::operator+ ( const Time & t ) const

operator + (positive time adjustment).

Parameters

t	time adjustment.

Returns: a JulianDate object with the adjustment incorporated.

Definition at line 268 of file julian-date.cc.

References DayToMs, m_days, m_ms_day, and m_time_scale.

◆ operator+=()

void ns3::JulianDate::operator+= ( const Time & t )

operator += (positive time adjustment).

Parameters

t	time adjustment.

Definition at line 288 of file julian-date.cc.

◆ operator-() [1/2]

Time ns3::JulianDate::operator- ( const JulianDate & jd ) const

operator - (time between Julian dates).

Parameters

jd	Julian days.

Returns: the time between both Julian dates.

Definition at line 326 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator-() [2/2]

JulianDate ns3::JulianDate::operator- ( const Time & t ) const

operator - (negative time adjustment).

Parameters

t	time adjustment.

Returns: a JulianDate object with the adjustment incorporated.

Definition at line 294 of file julian-date.cc.

References DayToMs, m_days, m_ms_day, and m_time_scale.

◆ operator-=()

void ns3::JulianDate::operator-= ( const Time & t )

operator -= (negative time adjustment).

Parameters

t	time adjustment.

Definition at line 320 of file julian-date.cc.

◆ operator<()

bool ns3::JulianDate::operator< ( const JulianDate & jd ) const

operator < (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is prior.

Definition at line 334 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator<=()

bool ns3::JulianDate::operator<= ( const JulianDate & jd ) const

operator <= (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is prior or equal.

Definition at line 343 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator==()

bool ns3::JulianDate::operator== ( const JulianDate & jd ) const

operator == (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is equal.

Definition at line 371 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator>()

bool ns3::JulianDate::operator> ( const JulianDate & jd ) const

operator > (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is later.

Definition at line 353 of file julian-date.cc.

References m_days, and m_ms_day.

◆ operator>=()

bool ns3::JulianDate::operator>= ( const JulianDate & jd ) const

operator >= (compare Julian dates).

Parameters

jd	Julian days.

Returns: a boolean to indicate if the Julian date is equal or later.

Definition at line 362 of file julian-date.cc.

References m_days, and m_ms_day.

◆ SetDate() [1/3]

void ns3::JulianDate::SetDate	(	const std::string &	date,
		TimeSystem	ts = `DateTime::UTC`
	)

Set Julian days using time in Gregorian calendar date.

Parameters

date	Gregorian calendar date.
ts	Time system of the date (UTC, UT1, TAI, TT or GPST).

Definition at line 234 of file julian-date.cc.

References ns3::DateTime::day, ns3::DateTime::hours, m_days, m_ms_day, m_time_scale, MaxYear, ns3::DateTime::millisecs, ns3::DateTime::minutes, MinYear, ns3::DateTime::month, OffsetToUtc(), ns3::DateTime::POSIX, PosixEpoch, ns3::DateTime::seconds, and ns3::DateTime::year.

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◆ SetDate() [2/3]

void ns3::JulianDate::SetDate ( double jd )

Set the Julian days.

This function has lower precision as there may be some inaccuracy at the millisecond level due to double type limited precision.

Parameters

jd	The Julian days.

Definition at line 214 of file julian-date.cc.

References DayToMs, m_days, m_ms_day, m_time_scale, PosixEpoch, and ns3::DateTime::UTC.

Referenced by JulianDate().

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◆ SetDate() [3/3]

void ns3::JulianDate::SetDate	(	uint32_t	days,
		uint32_t	ms_day
	)

Set Julian days using the time since Unix/POSIX epoch.

Parameters

days	Full days since Unix/POSIX epoch (1 January 1970, 0h).
ms_day	Milliseconds of the day (since midnight).

Definition at line 225 of file julian-date.cc.

References m_days, m_ms_day, m_time_scale, and ns3::DateTime::POSIX.

◆ TaiMinusUtc()

Time ns3::JulianDate::TaiMinusUtc ( uint32_t daysInPosix )

staticprivate

The difference between TAI and UTC time systems.

Parameters

daysInPosix Full days since Unix/POSIX epoch.

Returns: the difference between TAI and UTC (number of leap seconds).

Definition at line 409 of file julian-date.cc.

References ns3::IersData::BaseLeapSeconds, and ns3::IersData::LeapSeconds.

Referenced by OffsetFromUtc(), and OffsetToUtc().

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◆ ToString() [1/2]

std::string ns3::JulianDate::ToString ( TimeSystem ts ) const

Get the string representation of the Gregorian calendar date in time system ts.

The string is formatted as "YYYY-MM-DD hh:mm:ss.ms TTT", where YYYY is the year, MM the month, DD the day of the month, hh the hour of the day, mm the minutes of the day, ss the seconds of the day, and ms the milliseconds.

Returns: a string representing the Gregorian calendar date in time system ts.

Definition at line 147 of file julian-date.cc.

References m_time_scale, and ToString().

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◆ ToString() [2/2]

std::string ns3::JulianDate::ToString ( void ) const

Get the string representation of the Gregorian calendar date.

The string is formatted as "YYYY-MM-DD hh:mm:ss.ms TTT", where YYYY is the year, MM the month, DD the day of the month, hh the hour of the day, mm the minutes of the day, ss the seconds of the day, and ms the milliseconds.

Returns: a string representing the date in the Gregorian calendar.

Definition at line 133 of file julian-date.cc.

References ns3::DateTime::day, GregorianDate(), ns3::DateTime::hours, m_time_scale, ns3::DateTime::millisecs, ns3::DateTime::minutes, ns3::DateTime::month, OffsetFromUtc(), ns3::DateTime::seconds, and ns3::DateTime::year.

Referenced by ToString().

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Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	os,
		const JulianDate &	jd
	)

friend

operator << (print as GregorianDate).

Print the textual representation (Gregorian calendar date) using the time system specified upon creation or setting.

Parameters

os	Output stream object.
jd	Julian date object.

Returns: the output stream.

Definition at line 388 of file julian-date.cc.

Member Data Documentation

◆ DayToMs

const uint32_t ns3::JulianDate::DayToMs = HourToMs * 24

static

milliseconds in a day

millisecs in a day

Definition at line 90 of file julian-date.h.

Referenced by GetDouble(), GetOmegaEarth(), operator+(), operator-(), and SetDate().

◆ HourToMs

const uint32_t ns3::JulianDate::HourToMs = 3600000

static

milliseconds in an hour

millisecs in an hour

Definition at line 89 of file julian-date.h.

◆ J2000Epoch

const uint32_t ns3::JulianDate::J2000Epoch = 2451545

static

1 Jan 2000, 12h

Definition at line 87 of file julian-date.h.

◆ m_days

uint32_t ns3::JulianDate::m_days

private

full days since epoch.

Definition at line 370 of file julian-date.h.

Referenced by JulianDate(), GetDateTime(), GetDouble(), GetGmst(), GetOmegaEarth(), GetPolarMotion(), GregorianDate(), OffsetFromUtc(), OffsetToUtc(), operator!=(), operator+(), operator-(), operator<(), operator<=(), operator==(), operator>(), operator>=(), and SetDate().

◆ m_ms_day

uint32_t ns3::JulianDate::m_ms_day

private

milliseconds of the day.

Definition at line 371 of file julian-date.h.

Referenced by JulianDate(), GetDouble(), GregorianDate(), OffsetToUtc(), operator!=(), operator+(), operator-(), operator<(), operator<=(), operator==(), operator>(), operator>=(), and SetDate().

◆ m_time_scale

TimeSystem ns3::JulianDate::m_time_scale

private

external time system.

Definition at line 372 of file julian-date.h.

Referenced by JulianDate(), OffsetFromUtc(), OffsetToUtc(), operator+(), operator-(), SetDate(), and ToString().

◆ MaxYear

const uint32_t ns3::JulianDate::MaxYear = 2099

static

Maximum year supported.

maximum year

Definition at line 85 of file julian-date.h.

Referenced by SetDate().

◆ MinYear

const uint32_t ns3::JulianDate::MinYear = 1992

static

Minimum year supported.

IERS data since.

Definition at line 84 of file julian-date.h.

Referenced by JulianDate(), GregorianDate(), and SetDate().

◆ Posix1992

const uint32_t ns3::JulianDate::Posix1992 = 8035

static

1 Jan 1992 (POSIX days)

1 Jan 1992 (Unix days)

Definition at line 88 of file julian-date.h.

Referenced by Dut1(), GetOmegaEarth(), GetPolarMotion(), and GregorianDate().

◆ PosixEpoch

const double ns3::JulianDate::PosixEpoch = 2440587.5

static

1 Jan 1970, 0h

Definition at line 86 of file julian-date.h.

Referenced by GetDouble(), and SetDate().

◆ PosixYear

const uint32_t ns3::JulianDate::PosixYear = 1970

static

POSIX/Unix epoch year.

POSIX epoch year.

Definition at line 83 of file julian-date.h.

Referenced by JulianDate().

◆ TaiToGps

const Time ns3::JulianDate::TaiToGps = MilliSeconds(19000)

static

offset from TAI to GPST

TAI - GPST (in ms)

Definition at line 92 of file julian-date.h.

Referenced by OffsetFromUtc(), and OffsetToUtc().

◆ TtToTai

const Time ns3::JulianDate::TtToTai = MilliSeconds(32184)

static

offset from TT to TAI

TT - TAI (in ms)

Definition at line 91 of file julian-date.h.

Referenced by OffsetFromUtc(), and OffsetToUtc().

The documentation for this class was generated from the following files:

/builds/sns3/satellite/satellite/model/julian-date.h
/builds/sns3/satellite/satellite/model/julian-date.cc

Public Member Functions

Static Public Attributes

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ TimeSystem

Constructor & Destructor Documentation

◆ JulianDate() [1/4]

◆ JulianDate() [2/4]

◆ JulianDate() [3/4]

◆ JulianDate() [4/4]

Member Function Documentation

◆ Dut1()

◆ GetDateTime() [1/2]

◆ GetDateTime() [2/2]

◆ GetDouble()

◆ GetGmst()

◆ GetOmegaEarth()

◆ GetPolarMotion()

◆ GregorianDate() [1/2]

◆ GregorianDate() [2/2]

◆ IsLeapYear()

◆ OffsetFromUtc() [1/2]

◆ OffsetFromUtc() [2/2]

◆ OffsetToUtc() [1/2]

◆ OffsetToUtc() [2/2]

◆ operator!=()

◆ operator+()

◆ operator+=()

◆ operator-() [1/2]

◆ operator-() [2/2]

◆ operator-=()

◆ operator<()

◆ operator<=()

◆ operator==()

◆ operator>()

◆ operator>=()

◆ SetDate() [1/3]

◆ SetDate() [2/3]

◆ SetDate() [3/3]

◆ TaiMinusUtc()

◆ ToString() [1/2]

◆ ToString() [2/2]

Friends And Related Function Documentation

◆ operator<<

Member Data Documentation

◆ DayToMs

◆ HourToMs

◆ J2000Epoch

◆ m_days

◆ m_ms_day

◆ m_time_scale

◆ MaxYear

◆ MinYear

◆ Posix1992

◆ PosixEpoch

◆ PosixYear

◆ TaiToGps

◆ TtToTai