Space Date, abbreviated as S.D. or simply SD, is the main method of year counting in the Star Ocean universe. It is the standard date system in use in the Pangalactic Federation. Every game in the series has taken place in the SD calendar, which was adopted when mankind developed a way of traveling at a faster-than-light speed via the Subspace Warp engine, invented by Professor Trillas Bachtein.
The titles of the Star Ocean series take place in the following eras:
A system of dates established in 2087 AD on Earth, the third planet of the Sol System, and the standard date system in use in the Pangalactic Federation. This system commemorates the year Professor Trillas Bachtein developed his faster-than-light subspace warp system, which enabled interstellar travel.
On March 7th, four years after Earthlings first traveled faster than light through interstellar space, the Terran government of the time established this system of dates, with 2087 AD designated as the first year, in honor of this great achievement.
