It could be the metadata for a fan-made translation file or a specific "History of Poland" mod update that was pushed during that afternoon. Key Content in HoI4 during late 2022
If you are looking for the actual game content associated with that period, it centered on: Hearts of Iron IVData edycji: 7-11-2022, 15:53P...
The introduction of a modular system to build specific airframes (fighters, CAS, bombers) using various engines and armaments. It could be the metadata for a fan-made