The year 23,643 before the Battle of Yavin, also known as the year 12,810 after the Tho Yor Arrival, the year 19,990 before the Treaty of Coruscant, the year 22,643 before the Ruusan Reformation, or the year 23,608 before the Great ReSynchronizaton, was a period of time in the Expansionist Era. Around that time, the planet Uphrades experienced significant volcanic activity that resulted in the planet's soil being especially fertile tens of thousands of years later.