Even though the calendar doesn't really have space to write things on the days, it's the greatest calendar we have bought to date, because of the fun facts.
I love Kurzgesagt, and I am also in favor of the HE time system, because it just makes history so much more easy for me to grasp.
Here's a related video, which I recommend, and no one is paying me to say that. In fact, I had to pay for this calendar, too. But I was super excited to get a copy before they sold out.
Happy New Year!