Find posts "solved" in specific month

I run discourse in a corporate environment as an order and documentation system. I use tags to choose whether an order (topic) is ongoing or completed. But I would need a way to identify orders that are completed in Mars, for example.
Don’t feel like I want to use a tag for every month, eg tag: March19

Have limited visible tags in respective categories to facilitate the creation / maintenance of orders.

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I had a thought of using hashtags that when something was finished, the person who delivered the order could comment on # march19 at the end of the thread so you could search on that tag. But does it not seem that hashtags work as they should on my discourse, the function may have been removed for the benefit of the tag system?

Are there any other plugins or ways to do this?
Need ideas :slight_smile:

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