datedropper is an easy to use date picker material UI. A datepicker jQuery plugin to create a modern, easy to use and customizable HTML calendar, designed with simplicity in mind so the default UI should blend into any layout.
Powerful and Lightweight : Has over 100 customizable settings. Built as separate modules to keep filesize down.
Developer-Friendly : Has connectors for React, Vue, and Angular. Provides high-quality TypeScript definitions.
react-big-calendar is a Google Calendar/Outlook like events calendar component built for React and made for modern browser and uses flexbox over the classic tables-ception approach.
tinydate is a tiny and reusable date formatter. It's also extremely fast!
A simple and customizable year calendar with jQuery and Bootstrap. It has range picker functionality and multi language support.
jQuery Time Slider is a jQuery plugin to create sliders with selection of time and date.
EasyTimer.js is a simple timer/chronometer/countdown library compatible with AMD and NodeJS.
EasyTimer.js released under the MIT license
Timing.js is a small set of helpers for working with the Navigation Timing API to identify where your application is spending its time. Useful as a standalone script, DevTools Snippet or bookmarklet.
Moment Timezone is timezone support for moment.js that parse and display dates in any timezone.
Spacetime is a lightweight way to manipulate, traverse, compare, and format dates and times across planet Earth.
Fecha is a lightweight date formatting and parsing library. Meant to replace parsing and formatting functionality of moment.js.