Probably 15 September 1977; first disclosure reportedly 30 September; newspaper 4 October / T128
Antônio Bogado La Rubia / Paciência: one-legged entities and a reconstructed date
Paciência, Rio de Janeiro

Witness account
La Rubia said one-legged, mechanical-looking figures moved him from a playing field into a large craft, where he saw projected scenes before being released elsewhere. He presented the experience as consciously remembered.
Public record
The reproduced investigation reconstructs 15 September 1977, despite a modern introduction giving 19 September and other date shifts. It records disclosure on 30 September and newspaper coverage on 4 October.