Answer
The proclamation of a new Catalan State by Lluís Companys took place on October 6th. This proclamation occurred during the events of October 6, 1934, known as the "Events of October". These events marked a significant moment of political tension and a failed attempt by the Catalan Generalitat, led by President Lluís Companys, to establish an autonomous Catalan State amid complex political circumstances in Spain at the time.