Habitable planetary systems are spread accross the galaxy. Statistics were calculated for each system using the GURPS Space Star system generator (available here: GURPS Handbook of the Planets), which uses the star system design rules in GURPS Space, 4th edition. This results in values calulcated in earth hours and days. To convert these to the RPC Calendar in this setting I have used the following conversions:
1 Earth Hour = 1 RPC Hour
1 Earth Day = 0.80 RPC Days = 24 RPC Hours
1 Earth Year = 0.898 RPC Cycles = 292 RPC Days
The galaxy is of course full of planetary systems. Humans initially colonized just a few systems, but have been spreading ever since. Systems are presented here separated by primary species, then in chronological order of discovery or colonization.