Yearly Repeater plugin is a boon when you need to repeat a single post every year on a particular day. You can achieve this by editing timestamp manually every year, but using this plugin you can automate this task. This plugin is very useful when you are blogging about historical events, famous persons etc. All the posts which needs to be repeated are listed on the top of your blog posts for that day.
WordPress Yearly Repeater, Plugin, WordPress, WordPress Plugin