Time¶

class huira.TimeScale¶

Members:

UTC

TAI

TT

TDB

TAI = <TimeScale.TAI: 1>¶

TDB = <TimeScale.TDB: 3>¶

TT = <TimeScale.TT: 2>¶

UTC = <TimeScale.UTC: 0>¶

__init__(self: huira._huira.TimeScale, value: int) → None¶

property name¶

property value¶

class huira.Time¶

DAYS_PER_JULIAN_YEAR = 365.25¶

J2000_JD = 2451545.0¶

MJD_OFFSET = 2400000.5¶

TT_TAI_OFFSET = 32.184¶

__init__(*args, **kwargs)¶

Overloaded function.

__init__(self: huira._huira.Time, utc_string: str) -> None

Construct from a UTC date string (e.g. ‘2024-03-15T12:00:00’)

__init__(self: huira._huira.Time, datetime: object) -> None

Construct from a Python datetime object (interpreted as UTC)

ephemeris_time(self: huira._huira.Time) → float¶

et(self: huira._huira.Time) → float¶: Get ephemeris time (TDB seconds past J2000.0)

static from_ephemeris_time(et: float) → huira._huira.Time¶

static from_et(et: float) → huira._huira.Time¶: Create from ephemeris time (TDB seconds past J2000.0)

static from_julian_date(jd: float, scale: huira._huira.TimeScale) → huira._huira.Time¶: Create from a Julian Date in the specified timescale

static from_modified_julian_date(mjd: float, scale: huira._huira.TimeScale) → huira._huira.Time¶: Create from a Modified Julian Date in the specified timescale

julian_years_since_j2000(self: huira._huira.Time, scale: huira._huira.TimeScale = <TimeScale.TT: 2>) → float¶

to_datetime(self: huira._huira.Time) → object¶: Convert to a timezone-aware (UTC) Python datetime object

to_iso_8601(self: huira._huira.Time) → str¶

to_julian_date(self: huira._huira.Time, scale: huira._huira.TimeScale = <TimeScale.TDB: 3>) → float¶

to_modified_julian_date(self: huira._huira.Time, scale: huira._huira.TimeScale = <TimeScale.TDB: 3>) → float¶

to_utc_string(self: huira._huira.Time, format: str = 'YYYY-MM-DD HR:MN:SC.### UTC') → str¶