Is there an existing tech calendar for more content ideas?

Hey there,

I just saw on Twitter that Python is 30 years old this month. I would have missed the news if I wasn't on Twitter today. This type of content is the right entertainment for my target audience. I want to do less promotional content and create more entertaining posts on social media.

So my question is: is there any tool/ calendar that gathers all the entertaining/ event stuff that the developers would actually care about?

Thanks for your help!