Even though this is a very very minor issue, I still think it is an issue. (And I don't think this is a duplicate as the possible duplicate is status-completed while this issue is obviously not status-completed as it happened "just now").
If you have the correct timing when there's a new day on a Stack Exchange site, you can get the DVLR message to say "Daily vote limit reached; vote again just now." which just doesn't sound grammatically correct. "just now" is normally used for things that has already happened.
A better message would be: "Daily vote limit reached; vote again now." or "Daily vote limit reached; vote again momentarily." (which is the same message as what is shown shortly before this message can appear)