Cogitatio is a suite of systems for Unreal Engine that introduces some commonly found features in games. Some systems are capable of empowering one another, exposing new (or enhancing existing) functionality when present.
hour, time, season
Hora is a performant date and time system. Dozens of helpful Blueprint nodes are made available for getting the time, date, season, etc. Events for the passage of seconds, minutes, hours, and so on are also available, as well as time-of-day changes (morning, afternoon, etc). Annual (once yearly) and custom (once on a specific day/month/year) date events can be added easily as well. Julian date is calculate, Julian days since epoch dates (currently J2000), and season days (days into the current season) as well as season value (normalized value from 0-1 of current season passage) are also available.