asgardia-calendar-converter

Convert dates between ISO (Gregorian) calendar and proposed Asgardian calendar back and forth

Leap Days

Per Decree #2:

The question of adding an extra day in a leap year will be addressed separately.

This means that any date outside 2017 can be affected by the later-proposed leap day adaptation. I've come up with three different approaches that I find to be the most likely:

• "feb": Leap Day is included between February and March (similar to ISO calendar)
• "jun": Leap Day is included between June and Asgard (similar to original International Fixed Calendar)
• "non": no Leap Day is ever included

Use the keyword of your selected mode in all calls to convert functions (see API).

Install

npm install --save asgardia-calendar-converter

Usage

Import:

import {toAsgardian, toGregorian} from "asgardia-calendar-converter";

or require:

const {toAsgardian, toGregorian} = require("asgardia-calendar-converter");

and use the provided functions:

console.log(toAsgardian({day: 1, month: 7, year: 2017}, "non")); // logs {day: 14, month: 7, year: 1}
console.log(toGregorian({day: 1, month: 6, year: 1}, "non")); // logs {day: 21, month: 5, year: 2017}

API

Datum

interface Datum {
  day: number;
  month: number;
  year: number;
}

toAsgardian

function toAsgardian(datum: Datum, mode: "feb" | "jun" | "non"): Datum;

• datum: ISO Datum object to be converted to Asgardian
• mode: Leap-day mode to be used (see Leap Days)

toGregorian

function toGregorian(datum: Datum, mode: "feb" | "jun" | "non"): Datum;

• datum: Asgardian Datum object to be converted to ISO
• mode: Leap-day mode to be used (see Leap Days)

isAsgardianYearLeap

function isAsgardianYearLeap(year: number): Datum;

• year: Asgardian year to be checked whether it is leap or not

isGregorianYearLeap

function isGregorianYearLeap(year: number): Datum;

• year: ISO year to be checked whether it is leap or not

Development

Clone the repo and install dev-dependencies:

git clone url/of/your/fork
cd path/to/your/clone
npm install

Compile files from src to dist:

npm run build

Watch src and compile files from there to dist on change:

npm run watch

Run tests:

npm test

Compile files for demo to out:

npm run build-demo