CPK Web Solutions

Hinnerk Altenburg

Cron not running when you expect? This plugin may help. Also provides insight into WP-Cron exactly like the Cron View plugin.
This plugin will visit your site every minute and thereby ensure that your cron jobs run on time. It is mostly intended for people who can’t use real cron for some reason.
Note: This is the exact same plugin that was previously sold on Code Canyon.
Contributions are welcome: https://github.com/hinnerk-a/improved-cron

Improved Cron

Keep WP-Cron running every minute for scheduled tasks without actually using Cron.

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)

Improved Cron vs WP Scheduled Themes