Date/time picker widget based on Bootstrap. It has public API and has many options to customize.
datedropper is a jQuery plugin that provides a quick and easy way to manage dates for input fields.
A tutorial about how to make a simple countdown timer using jQuery.
jQuery Simple Event Calendar make it easier for you to create an event calendar, datepicker or whatever you want with jQuery.
Start/Stop/Resume/Remove a timer inside any HTML element. Get notified at a set time or at regular intervals.
Bootstrap Calendar is a full view calendar with year, month, week and day views based on templates with Bootstrap.
ClassyCountdown is a jQuery plugin that allows you to easily create clean circular countdowns. It is fully customizable and includes 12 themes, which can be modified and it uses HTML5 canvas for rendering the circles.
Datetator is a jQuery-based replacement for input boxes, making them date pickers. It affects the original input box directly, which is used as the data container.
Timepicki is a really simple jQuery plugin that displays an user-friendly time picker upon selection of an html input text field.
e-calendar is a jQuery plugin for creating a calendar with events. It's so easy to use.
Rome is a dependency free, opt-in UI, customizable date and time picker.
ClockPicker is a clock-style timepicker for Bootstrap (or jQuery).
Datepick is a jQuery plugin that attaches a popup calendar to your input fields or shows an inline calendar for selecting individual dates or date ranges.
A nice tutorial about "Creating a Flippin’ 3D Countdown with CSS & JavaScript".
Datepair is a jQuery plugin for intelligently selecting date and time ranges inspired by Google Calendar