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<p align="center"><a href="https://day.js.org/" target="_blank" rel="noopener noreferrer"><img width="550"
src="https://user-images.githubusercontent.com/17680888/39081119-3057bbe2-456e-11e8-862c-646133ad4b43.png"
alt="Day.js" /></a></p>
<p align="center">Fast <b>2kB</b> alternative to Moment.js with the same modern API</p>
<p align="center">
<a href="https://unpkg.com/dayjs/dayjs.min.js"><img
src="https://img.badgesize.io/https://unpkg.com/dayjs/dayjs.min.js?compression=gzip&style=flat-square"
alt="Gzip Size"></a>
<a href="https://www.npmjs.com/package/dayjs"><img src="https://img.shields.io/npm/v/dayjs.svg?style=flat-square&colorB=51C838"
alt="NPM Version"></a>
<a href="https://travis-ci.com/iamkun/dayjs"><img
src="https://img.shields.io/travis/iamkun/dayjs/master.svg?style=flat-square" alt="Build Status"></a>
<a href="https://codecov.io/gh/iamkun/dayjs"><img
src="https://img.shields.io/codecov/c/github/iamkun/dayjs/master.svg?style=flat-square" alt="Codecov"></a>
<a href="https://github.com/iamkun/dayjs/blob/master/LICENSE"><img
src="https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square" alt="License"></a>
<br>
<a href="https://saucelabs.com/u/dayjs">
<img width="750" src="https://user-images.githubusercontent.com/17680888/40040137-8e3323a6-584b-11e8-9dba-bbe577ee8a7b.png" alt="Sauce Test Status">
</a>
</p>
> Day.js is a minimalist JavaScript library that parses, validates, manipulates, and displays dates and times for modern browsers with a largely Moment.js-compatible API. If you use Moment.js, you already know how to use Day.js.
```js
dayjs().startOf('month').add(1, 'day').set('year', 2018).format('YYYY-MM-DD HH:mm:ss');
```
* 馃晵 Familiar Moment.js API & patterns
* 馃挭 Immutable
* 馃敟 Chainable
* 馃寪 I18n support
* 馃摝 2kb mini library
* 馃懌 All browsers supported
---
## Getting Started
### Documentation
You can find more details, API, and other docs on [day.js.org](https://day.js.org/) website.
### Installation
```console
npm install dayjs --save
```
馃摎[Installation Guide](https://day.js.org/docs/en/installation/installation)
### API
It's easy to use Day.js APIs to parse, validate, manipulate, and display dates and times.
```javascript
dayjs('2018-08-08') // parse
dayjs().format('{YYYY} MM-DDTHH:mm:ss SSS [Z] A') // display
dayjs().set('month', 3).month() // get & set
dayjs().add(1, 'year') // manipulate
dayjs().isBefore(dayjs()) // query
```
馃摎[API Reference](https://day.js.org/docs/en/parse/parse)
### I18n
Day.js has great support for internationalization.
But none of them will be included in your build unless you use it.
```javascript
import 'dayjs/locale/es' // load on demand
dayjs.locale('es') // use Spanish locale globally
dayjs('2018-05-05').locale('zh-cn').format() // use Chinese Simplified locale in a specific instance
```
馃摎[Internationalization](https://day.js.org/docs/en/i18n/i18n)
### Plugin
A plugin is an independent module that can be added to Day.js to extend functionality or add new features.
```javascript
import advancedFormat from 'dayjs/plugin/advancedFormat' // load on demand
dayjs.extend(advancedFormat) // use plugin
dayjs().format('Q Do k kk X x') // more available formats
```
馃摎[Plugin List](https://day.js.org/docs/en/plugin/plugin)
## Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website.
[[Become a sponsor via Github](https://github.com/sponsors/iamkun/)] [[Become a sponsor via OpenCollective](https://opencollective.com/dayjs#sponsor)]
<a href="https://toyokumo.co.jp" target="_blank">
<img width="70" src="https://user-images.githubusercontent.com/17680888/197092231-2367b5eb-1e43-467e-a311-23f7cd97b086.png">
</a>
<a href="https://github.com/alan-eu" target="_blank">
<img width="70" src="https://avatars.githubusercontent.com/u/18175329?s=52&v=4">
</a>
<a href="https://opencollective.com/sight-and-sound-ministries" target="_blank">
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</a>
<a href="https://www.exoflare.com/open-source/?utm_source=dayjs&utm_campaign=open_source" target="_blank">
<img width="70" src="https://user-images.githubusercontent.com/17680888/162761622-1407a849-0c41-4591-8aa9-f98114ec2092.png">
</a>
<a href="https://rxdb.info/?utm_source=day.js.org&utm_medium=banner&utm_campaign=day.js.org-sponsored" target="_blank"><img width="70" src="https://user-images.githubusercontent.com/17680888/200301812-9c9bd523-5dc4-4cab-b380-543fbcd3802c.svg"></a>
<a href="https://github.com/vendure-ecommerce" target="_blank"><img width="70" src="https://avatars.githubusercontent.com/u/39629390?s=52&v=4"></a>
<a href="https://opencollective.com/docbot" target="_blank"><img width="70" src="https://images.opencollective.com/docbot/457761e/logo.png"></a>
<a href="https://opencollective.com/datawrapper" target="_blank"><img width="70" src="https://images.opencollective.com/datawrapper/c13e229/logo.png"></a>
## Contributors
This project exists thanks to all the people who contribute.
Please give us a 馃挅 star 馃挅 to support us. Thank you.
And thank you to all our backers! 馃檹
<a href="https://opencollective.com/dayjs/backer/0/website?requireActive=false" target="_blank"><img width="35" src="https://opencollective.com/dayjs/backer/0/avatar.svg?requireActive=false"></a>
<a href="https://opencollective.com/dayjs/backer/1/website?requireActive=false" target="_blank"><img width="35" src="https://opencollective.com/dayjs/backer/1/avatar.svg?requireActive=false"></a>
<a href="https://opencollective.com/dayjs/backer/2/website?requireActive=false" target="_blank"><img width="35" src="https://opencollective.com/dayjs/backer/2/avatar.svg?requireActive=false"></a>
<a href="https://opencollective.com/dayjs/backer/3/website?requireActive=false" target="_blank"><img width="35" src="https://opencollective.com/dayjs/backer/3/avatar.svg?requireActive=false"></a>
<br />
<a href="https://opencollective.com/dayjs#backers" target="_blank"><img src="https://opencollective.com/dayjs/contributors.svg?width=890" /></a>
## License
Day.js is licensed under a [MIT License](./LICENSE).