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historical-dates
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0.2.2 • Public • Published

Historical Dates

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JavaScript/TypeScript library for converting/calculating Roman and Easter dates. Based on Axel Findling's Roman date converter and Nikolaus A. Bär's easter date calculator.

Friend: Do dates make you nervous?
Me: omg yes especially when doing math across timezone boundaries

— Daniel Cousineau (@dcousineau) August 3, 2016

Get Started

npm install historical-dates

Determining the dates of Easter

import { calcEaster } from 'historical-dates';
 
let easter = calcEaster(1400, 'julian');
console.log(easter.sunday);
// 1400-4-18 (Julian)

Parsing Roman dates

import { RomanDate } from 'historical-dates';
 
let romanDate = RomanDate.fromString('prid kal. mar mdc', 'gregorian');
console.log(romanDate);
// pridie Kal. Mart. MDC
console.log(romanDate.toDate());
// 1600-2-28

Converting Julian and Gregorian dates

import { createDate } from 'historical-dates';
 
let julianDate = createDate(1582, 10, 5, 'julian');
let gregorianDate = julianDate.toGregorian();
console.log(gregorianDate);
// 1582-10-15

Readme

Keywords

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Install

npm i historical-dates

Repository

github.com/UUDigitalHumanitieslab/historical-dates

Homepage

github.com/UUDigitalHumanitieslab/historical-dates#readme

Weekly Downloads

6

Version

0.2.2

License

UNLICENSED

Unpacked Size

1.06 MB

Total Files

67

Last publish

Collaborators

  • jgonggrijp
  • dhl-uu-bis
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