You don't 'queue up' actions in EU4 or any other Paradox grand strategy - you indicate something has to happen (start building something or move a formation som

You don't 'queue up' actions in EU4 or any other Paradox grand strategy - you indicate something has to happen (start building something or move a formation somewhere) and it start happening immediately, in real time. The day/month/year doesn't serve any practical purpose outside of orientation for the end user. Nothing happens at the end of the day/month/year except for actions initiated earlier who's end happens to coincide.