I like how simple it makes formatting date/time values for display purposes easy to do. It's very fast as well! The only thing about this library i dislike is not being able to use moment-iso8601 format (e.g., "2016-06-10T14:50Z") without having to add extra libraries or workarounds. If you're looking into using javascript to manipulate time data with ease - look no further than moment.js. All of my problems are solved by just writing some code and then testing if everything works properly before publishing any products online.