Timeline of the Firmament

All times are given in interstellar time (IT). Individual planets and colonies generally have their own time zones and calendars to reflect the local orbital period and seasons of their home. However, interstellar time is the agreed-upon fixed reference of the Firmament and is used to track dates and times in terms of how much time has elapsed since the Firmament was first discovered.

The Old Earth

The Firmament

The Foundation