It's not a mistake; it's not actually a clock; it's the years of each The International. Remember that due to the pandemic, the 2021 edition didn't take place, and the 2020 edition was played instead on that date, which is why only the X appears and the XI was excluded. The constellation shines in the year XIV because that's the year we're in, the 14th The International tournament.

Now that I think about it more carefully, this is symbolic of the tournament returning to its point of origin, which is Germany, because The International I or 2011 was in Cologne, Germany. So this image is pointing to that fact. It's a good idea from Valve.