The Columi species achieves interstellar spaceflight and surveys the "primitive" people of Duro and Notron, known by that point as Coruscant. However, they are disappointed by the developing Human and Duros civilizations and return to their homeworld of Columus in isolation.
Around this time, the Sharu expand out from the Rafa system and the Centrality, planting their indestructible pyramids on planets such as Aargau. However, the Sharu bury their cities and revert to a primitive state in an attempt to avoid the attention of the Celestials.
The winged thrantcills are first recorded flying south for winter on Coruscant.
↑The New Essential Chronology states that the Ruusan Reformation occurred in 1000 BBY, which is the zero point of the calendar based on the Ruusan Reformation, so the difference between the calendar based on the Battle of Yavin and the Ruusan Reformation's year-notation system is 1,000 years. This date is derived using simple math based upon other confirmed dates.
↑The Essential Atlas places the Battle of Yavin, the zero point in the Galactic Standard Calendar, in 35:3 under the Great ReSynchronization dating system. The Essential Atlas also places the Battle of Selaggis on 43:2:28 and the Battle of Dathomir on 43:3:21. The Essential Guide to Warfare and The Essential Atlas both place the Battle of Dathomir in 8 ABY. The Essential Guide to Warfare also places the Battle of Selaggis in 7 ABY, confirming the placement of the division between each Galactic Standard Calendar year as the third month in the Great ReSynchronization year. Thus, there is a two-month gap between the two dating systems, and the first two months of a GrS year are the last two of the preceding Galactic Standard Calendar year. The Great ReSynchronization was instituted in 35 BBY, so there is a total difference of 35 years and 2 months between the two systems. This article's date is therefore derived from simple math based on this reference explanation.