Wrong language in Lightroom slide show

[Edit - sorry, wrong forum] 

When I do a slide show using that module in Lightroom classic, and set a text field to print date of capture, I get the months in English even though I have Lightroom set up with Swedish interface. Can't seem to find a cause or setting for that? When I do the same on my work computer, allso set up with Swedish interface in Lightroom, I get Swedish dates in the slide shows just like I want.