$ sudo npm install date-arithmetic
$ sudo npm install -g date-arithmetic

If want to update the date-arithmetic package execute the command as below,

$ sudo npm update date-arithmetic

Update package globally,

$ npm install -g date-arithmetic

Git clone:

$ sudo  git clone https://github.com/rektide/date-arithmetic.git

$ sudo  npm install -g ./date-arithmetic

date-arithmetic@3.1.0 /usr/lib/node_modules/date-arithmetic

How to remove date-arithmetic package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall date-arithmetic

Basic Information of date-arithmetic NPM Package: