As per here.....
With the separation of issues from updates, there is no longer any easily accessible way to determine when a nation/region has updated without intense observation and refreshing or an API-call based solution. The simplest, most accessible method of noting a past update time, looking at the timestamp on passed issues in happenings, is no longer viable. In order to both keep a low barrier to R/D access and to allow all other users to estimate when population and delegate changes will occur based on previous update times, I propose some sort of RSS marker either explicitly noting update, or noting a change that reliably happens at both major and minor updates.
A population change marker (I.e. World Assembly Census-Takers note that @nation@'s estimates population is now <population>) would work for majors, but fall short for minors.