Time, a measurable part of the universe's structure in which events occur in sequence, was regulated by Galactic Standard Calendar (which was based around the Galactic standard second) in most places within the galaxy. The invention of hyperdrive allowed spacers to bypass the laws of time physics and keep time dilation from happening during interstellar travel. There were a number of individuals in the history of the galaxy who actually managed to time travel in ways which defied the standard sequence.
In major galactic society, historians have divided galactic history into multiple eras, usually defined by a series of conflicts or a specific ruling. These periods can be named after a particularly notable Chancellor, a war, a government, or for other reasons.
The following is a list of time period widely accepted by galactic society.