date-easter

What is date-easter?

The date-easter npm package is designed to calculate the date of Easter for a given year. It provides functionality to determine the date of Easter Sunday based on different calendar systems, such as the Gregorian and Julian calendars.

What are date-easter's main functionalities?

Calculate Easter Date (Gregorian Calendar)

This feature allows you to calculate the date of Easter Sunday for a given year using the Gregorian calendar. The code sample demonstrates how to use the `gregorianEaster` function to get the date of Easter in 2023.

const easter = require('date-easter');
const year = 2023;
const easterDate = easter.gregorianEaster(year);
console.log(`Easter in ${year} is on: ${easterDate}`);

Calculate Easter Date (Julian Calendar)

This feature allows you to calculate the date of Easter Sunday for a given year using the Julian calendar. The code sample demonstrates how to use the `julianEaster` function to get the date of Easter in 2023 according to the Julian calendar.

const easter = require('date-easter');
const year = 2023;
const easterDate = easter.julianEaster(year);
console.log(`Easter in ${year} (Julian) is on: ${easterDate}`);

Other packages similar to date-easter

date-fns

date-fns is a comprehensive library for working with dates in JavaScript. While it does not specifically focus on calculating Easter dates, it provides a wide range of utilities for date manipulation and formatting. It can be used in conjunction with custom logic to calculate Easter dates.

moment

Moment.js is a popular library for parsing, validating, manipulating, and formatting dates in JavaScript. Similar to date-fns, it does not have built-in functionality for calculating Easter dates but offers extensive date manipulation capabilities that can be used to implement such calculations.

easter-date

easter-date is another npm package specifically designed to calculate the date of Easter Sunday. It provides similar functionality to date-easter, allowing users to determine the date of Easter for a given year using both the Gregorian and Julian calendars.

README

date-easter

Calculates Easter for a given year

Synopsis

// ES5
import {easter, gregorianEaster, julianEaster, orthodoxEaster} from 'date-easter'
// cjs
const {easter, gregorianEaster, julianEaster, orthodoxEaster} = require('date-easter')

easter(2016)
// { year: 2016, month: 3, day: 27 }
gregorianEaster(new Date('2016-01-01'))
// { year: 2016, month: 3, day: 27 }
julianEaster(2016)
// { year: 2016, month: 4, day: 18 }
orthodoxEaster(2016)
// { year: 2016, month: 5, day: 1 }

Description

All methods return an object with the following properties

• year: Year (begins at 0)
• month: Month (1 ... 12)
• day: Day (1 ... 31)
• toString(): Returns a formatted String YYYY-MM-DD

easter

Shortcut for gregorianEaster.

gregorianEaster

Returns the date of Gregorian Easter for a given year. Uses the extended Gaussian Easter algorithm.

julianEaster

Returns the date of Julian Easter for a given year in the Julian Calender

orthodoxEaster

Returns the date of Julian Easter for a given year in the Gregorian Calender

References

• Date::Easter Perl Package https://metacpan.org/pod/Date::Easter Rich Bowen [e-mail]
• http://www.chariot.net.au/~gmarts/eastcalc.htm
• Gaussian Easter algorithm

License

Copyright (c) 2015 commenthol

Software is released under MIT.