Morteza Geransayeh

WooCommerce lets you set a coupon “Expiry date” but not an exact time. 
This lightweight plugin adds a “Coupon expiry time” field (HH:MM, 24h) to the coupon edit screen. 
When both date and time are set, the coupon will expire on that date at the time you specify.
Key points 
* Works alongside WooCommerce’s native coupon expiry date. 
* Time is stored internally as seconds since midnight and combined with the date. 
* No changes to your theme or checkout templates required.
<h3>Usage</h3>
<ul>
<li>Set Expiry date as usual in WooCommerce.</li>
<li>Set Coupon expiry time in <code>HH:MM</code> (24-hour) format, for example <code>17:30</code>.</li>
<li>The coupon will be valid until the combined timestamp; after that, it will be treated as expired.</li>
</ul>

Expiry Time Coupon for WooCommerce

Add a time-of-day component to WooCommerce coupon expiry that works together with the built-in expiry date.

connormagyar

WP Event Manager is a great plugin — but it does not automatically expire events when they end. This plugin fixes that.
Auto Expire Events for WP Event Manager sets the <code>_event_expiry_date</code> meta field to 1 day after each event’s <code>_event_end_date</code>. If that date has passed, the event is marked as <code>expired</code>.
You can also retroactively apply this logic to existing events via Tools > Fix Event Expiry Dates.
This plugin is not affiliated with or endorsed by WP Event Manager or its developers.

Auto Expire Events for WP Event Manager

Automatically expire events in WP Event Manager based on their scheduled end date.

Expiry Time Coupon for WooCommerce vs Auto Expire Events for WP Event Manager