Ask HN: Why is my two day old submit on HN frontpage shown as 1 hour old?

Why is my two day old submit on HN frontpage shown as 1 hour old?

Here is direct link - it says 1 hour old https://news.ycombinator.com/item?id=33667439

And in list of my submits I can see that I've submitted link two days ago https://news.ycombinator.com/submitted?id=taubek

Title of my submit is Service Resilience — part 1: Startup Technology