ishitaka

XO Event Calendar is a simple event calendar plugin.
<h4>Functions</h4>
<ul>
<li>Adds an event custom post type and taxonomy.</li>
<li>Supports custom post type template.</li>
<li>Displays holiday on the calendar.</li>
<li>Supports WordPress multisite.</li>
</ul>
<h4>Operating environment</h4>
The Blocks is available in WordPress version 5.8 and above.

XO Event Calendar

XO Event Calendar is a simple event calendar plugin.

topwp

Lets you and your website rest on Shabbat and holidays. 
Automatically close your Woocommerce website in shabbat times and holidays, based on Jewish calendar data. 
Stop closing your website manually on Shabbat and holidays
Features 
* Choose your shop geolocation 
* Disable Add to cart functionality on shabbat 
* Disable payment method on shabbat 
* Display a message on your website on shabbat
Pro Options 
Purchase a license to activate full plugin options 
https://topwp.net/product/holy-day-off-wp-plugin/

Holy Day Off

Lets you and your website rest on Shabbat and holidays.

XO Event Calendar vs Holy Day Off