pray-calc/.github/wiki/api/functions/toJulianDate.md

pray-calc v2.1.1

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pray-calc / toJulianDate

Function: toJulianDate()

toJulianDate(date): number

Defined in: getSolarEphemeris.ts:22

Convert a JavaScript Date to a Julian Date number.

Parameters

date

Date

Any JavaScript Date object (uses UTC internally)

Returns

number

Julian Date: days since noon January 1, 4713 BC UTC

Example

const jd = toJulianDate(new Date('2024-06-21'));
// jd ≈ 2460482.5