jq.carousel is a jQuery plugin you can implement a simple carousel and customizable. Because they are designed to be flexible in various situations, can also be embedded in a responsive site.
Multi-day, multi-month animated datepicker jQuery plugin that weighs in at 14KB with the uncompressed development version.
jQuery TimePicker is a plugin to help users easily input time entries. It works by allowing the user to type times in a free format or selecting them from a dropdown menu.
The plugin will automatically convert all time entries using a format that can be changed passing the timeFormat option; the default value is hh:mm p which will give something like 02:16 PM.
jQuery Verbose Calendar is a plugin for creating a calendar that displays the whole months and days of a year at the same time. Once loaded, it auto-scrolls to "today" and displays the day names when hovered to any date in a tooltip. The calendar can be inserted into any HTML element with a single function.
Build a simple, interactive, historical timeline with HTML, CSS, and jQuery. The benefits of this timeline script are that it's fully accessible and simple, able to handle nearly any form of content, and printer friendly.
jQuery Countdown is a really cool plugin that has a great animation.
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago").
jDigiClock is a jQuery plugin inspired from HTC Hero Clock Widget.
FullCalendar is a jQuery plugin that provides a full-sized, drag & drop calendar like the one below. It uses AJAX to fetch events on-the-fly for each month and is easily configured to use your own feed format (an extension is provided for Google Calendar). It is visually customizable and exposes hooks for user-triggered events (like clicking or dragging an event)