[**moon-sighting v1.1.1**](../README.md)

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[moon-sighting](../README.md) / TimeScales

# Interface: TimeScales

Defined in: [types.ts:67](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L67)

All relevant time scale values for a single moment

## Properties

### deltaAT

> **deltaAT**: `number`

Defined in: [types.ts:80](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L80)

TAI - UTC in seconds (leap seconds count)

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### deltaT

> **deltaT**: `number`

Defined in: [types.ts:78](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L78)

TT - UT1 in seconds (delta-T)

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### jdTDB

> **jdTDB**: `number`

Defined in: [types.ts:74](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L74)

Julian Date in Barycentric Dynamical Time (used by JPL ephemerides)

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### jdTT

> **jdTT**: `number`

Defined in: [types.ts:72](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L72)

Julian Date in Terrestrial Time (TT = TAI + 32.184s)

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### jdUT1

> **jdUT1**: `number`

Defined in: [types.ts:76](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L76)

Julian Date in UT1 (Earth rotation time)

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### jdUTC

> **jdUTC**: `number`

Defined in: [types.ts:70](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L70)

Julian Date in UTC

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### utc

> **utc**: `Date`

Defined in: [types.ts:68](https://github.com/acamarata/moon-sighting/blob/89fb490051d0263a7d41c954161fb945f1569805/src/types.ts#L68)