Module constats 

Typed epoch and offset constants.

These values are exposed as raw qtty quantities so callers can pass them directly to Time::<A>::from_julian_days, from_modified_julian_days, etc.

Constants

DELTA_T_PREDICTION_HORIZON_MJD

MJD of the last compiled ΔT prediction point.

GPS_EPOCH_JD_TAI

GPS epoch expressed as a Julian Day on the TAI axis.

GPS_EPOCH_JD_UTC

GPS epoch as a Julian Day on the UTC axis: 1980-01-06T00:00:00 UTC.

GPS_EPOCH_TAI

GPS epoch expressed as TAI seconds since J2000 TT on the TAI axis.

GPS_EPOCH_TAI_MINUS_UTC

Exact TAI - UTC offset at the GPS epoch.

IAU_TIME_EPOCH_T0_JD

IAU 2000 B1.9 reference epoch T0 as JD(TT).

J2000_JD_TT

J2000 epoch as JD(TT) = 2_451_545.0.

JD_MINUS_MJD

Offset between the Julian Day and Modified Julian Day counts.

TDB_TT_MODEL_HIGH_ACCURACY_END_JD

End of the interval where the built-in TT↔TDB truncated series achieves about 10 microseconds accuracy relative to numerical integration.

TDB_TT_MODEL_HIGH_ACCURACY_START_JD

Start of the interval where the built-in TT↔TDB truncated series achieves about 10 microseconds accuracy relative to numerical integration.

TT_MINUS_TAI

Exact TT - TAI offset (32.184 s).

UNIX_EPOCH_JD

Unix epoch as a Julian Day on the UTC axis: 1970-01-01T00:00:00 UTC.

UNIX_EPOCH_MJD

Unix epoch as a Modified Julian Day on the UTC axis.

UTC_DEFINED_FROM_MJD

First MJD covered by the compiled UTC-TAI segment table.