Translate/edit last login on profile

Question: in user profiles, I show ‘date registered’ and ‘last login’. I’m Dutch and ‘date registered’ translates nicely. However, ‘last login’ does not. I don’t see anywhere I can change this. So now I have the two sitting next to each other, one English, one Dutch. Doesn’t look good.

Is there any way I can change how the meta is displayed? Also because one has a colon (:) and the other doesn’t:

Last login: Yesterday at 11:43am
Lid geworden augustus 26, 2016