Adam Erstelle

This plugin allows a wordpress administrator to schedule a different theme to display on the website for holidays or special events for all visitors.
The theme will be overridden on the live site for all people who visit the site. Great for setting a Christmas theme!
If you just want to have a css file added instead of a whole theme, check out the wp-scheduled-styles plugin.

WP Scheduled Themes

Schedule a theme to display on the live site for holidays or special events. (Available from Appearance - Scheduled Themes)

Nuage Creative

Nuage Business Calendar is a lightweight, clean, and easy-to-use business calendar plugin developed by Nuage Creative. It allows you to display a simple calendar on your website and mark specific days (such as regular holidays, business events, or special days) with elegant colored circles.
No complex booking systems, no heavy CSS—just a beautiful, minimalist calendar.
<h3>🌟 Key Features</h3>
<ul>
<li>Simple Click-to-Mark Interface: Just click on a date in the admin panel to toggle a circle.</li>
<li>Customizable Styles: Create up to 10 different circle styles with your own labels (e.g., Red for “Holidays”, Blue for “Events”) and custom colors.</li>
<li>National Holiday Import: Instantly import public holidays for specific countries (Japan, US, UK, France, Canada, etc.) via JSON files.</li>
<li>Flexible Shortcode: Easily display the calendar anywhere using the <code>[nbcal_calendar]</code> shortcode. You can also add a custom title like <code>[nbcal_calendar title="Business Day Calendar"]</code>.</li>
<li>Smart Navigation Limits: Prevent users from clicking too far into the past or future by setting navigation limits (e.g., allow navigating only 3 months ahead).</li>
<li>Legend Toggle: Choose whether to show or hide the legend below the calendar. Even if hidden, hover tooltips will show the label name!</li>
<li>Multilingual Ready: Fully internationalized. English, Japanese, and French translations are supported.</li>
</ul>

Nuage Business Calendar

A minimalist business calendar that highlights days with elegant colored circles. Perfect for business days, regular holidays, and events.

WP Scheduled Themes vs Nuage Business Calendar