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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 · Julian dates (and the julian package's functions), calendars, time scales, sidereal time and Mars time

Whentype

A moment: a Date or a number of milliseconds since 1970 (UTC, as JavaScript counts).

Import it

import type { When } from "@johnmorrisdotca/wakusei-planets/time";

Also exported from: @johnmorrisdotca/wakusei-planets/spacecraft

Definition

type When = Date | number;

Examples

import { toJulianDate, type When } from "@johnmorrisdotca/wakusei-planets/time";

const when: When = new Date(Date.UTC(2000, 0, 1, 12));
console.log(toJulianDate(when) === toJulianDate(when.getTime()));
true

What it prints (run when this page was built)

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