This string is representing a relative time, close to present, like "today at <time>". The string is "%1 at %2". In danish, that would be "Idag kl <tid>, so the translation should read "%1 kl %2". Instead I get "Idag ved <tid>", example "Idag ved 10.30". The code containing the line is at https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/src/lib/util/kformatprivate.cpp?ref_type=heads#L648
Some strings in the same function are missing translation to danish. Let me know if I can help.