The Solamani Accord is an agreement between the peoples of Earth and Ganymede shortly after first contact (stardate: -42.6.2.9). Stardate 1.1.1.1.00:00 corresponds to the implementation of the Solamani Accord.
The Solamani Accord aimed to support "an ecumenical spirit" between the two species of Solar sophont.
It established an eponymous joint governing body, consolidated the two planets' militaries, established a common currency (the now-defunct Sol), created a common time-keeping system (the Stardate, established legal protections for Artificial Intelligences and set limits on independent planetary expasion.
On stardate 2741.6.5.1, the Solamani Accord was used to inform the contents of The Second Accord following the surrender of Solamani High Command to The Second at the Battle of Sol.