What is the equivilant time in Nation States to one real world day?
Assuming that you're talking about roleplay, then there is *no* set answer. The game sets no time schedule on the roleplaying that is done. People are free to make 1 real day a week, month, year, or 2 minutes in the stories.
If you're referring to issues and such, they proceed on a normal time schedule with the updates that occur twice daily.