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Wakusei Planets惑星

The Sun, the planets and their moons as a clean line drawing, a shaded realistic drawing or a painted surface map, with real sizes, tilt and rotation, and the moons where they are at any date and time.

Wakusei is the Japanese word 惑星 for a planet. About the name

Contents

Reference · The same, with suncalc 1's conventions (radians, azimuth from south)

getMoonIlluminationfunction

The Moon's phase, as suncalc 1 gave it.

Import it

import { getMoonIllumination } from "@johnmorrisdotca/wakusei-planets/suncalc/legacy";

Definition

function getMoonIllumination(date?: Date | number): LegacyMoonIllumination

Parameters

NameTypeDescription
date (optional)number | Date

The moment; now when left out.

Returns

LegacyMoonIllumination

The lit fraction, the phase 0 to 1 and the bright limb's angle in radians (negative while waxing).

Examples

import { getMoonIllumination } from "@johnmorrisdotca/wakusei-planets/suncalc/legacy";

const { fraction, angle } = getMoonIllumination(new Date(Date.UTC(2026, 10, 24, 14)));
console.log(fraction.toFixed(2), angle < 0);
1.00 true

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/wakusei-planets 0.24.0.