Galactic Society uses the birthplace of humanity, Earth, for marking standard galactic cycles (one revolution of earth around Sol, the home star: sometimes the archaic term "year" is used) and 24 standard hours to mark one galactic day, adapting the Gregorian calendar system, but with cycle Zero set at the start of the Scientific Revolution in 1543 AD (Anno Domini - Latin meaning "in the year of the Lord"). When distinguishing between the two calendars, the abbreviation BS is sometimes used (for "birth of science").
Timeline of modern history:
0 - Birth of Science, starting with the Scientific Revolution in 1543 AD
90 - Galileo Galilei found suspect of heresy by Catholic Inquisition, sentenced to house arrest for his writings on a heliocentric model
144 - Isaac Newton publishes Mathematical Principles of Natural Philosophy, spawning the birth of Physics
217 - start of the First Industrial Revolution
404 - start of the Information Age with invention of the transistor
426 - first human walks on the moon of Earth
452 - Internet becomes commercially available to the public
523 - first AGI (artificial general intelligence) was created, considered the spiritual ancestors to modern virtual intelligence (VI)
5991 - birth of Molecular Engineering
6088 - birth of Augmentation and the scientific theory of the Soul
6095 - birth of Exilism, religion of retros that mark the exodus from earth to separate themselves from augmented society
6122 - founding of Abidon as a homeworld for retros
6400 est - the Breaking, an event where 98% of the Abidonian population was wiped out in an interplanetary war
7244 - Player group finds themselves soulwiped and marooned on the retro planet Abidon