Opening hours of businesses seem to be off. I think it's different from https://kagifeedback.org/d/2477-local-business-open-hours, as the hours are way off. My first guess would be a timezone issue, but even that wouldn't fully explain the extend.
These are the correct opening hours:

This is what Kagi Maps makes of them:

Link: https://kagi.com/maps/infobox?q=sprachenzentrum%20leipzig&ll=51.342381,12.378228&aid=ab_13904722004488758540#16.57/51.341841/12.380678
I am not sure if it's a mistake in the dataset or the parsing, since I don't know if it's fetching this data from Apple Maps or wherever, so I'm filing it as a bug, in case it's not just a minor mistake in the dataset.