Physchogeography and Derive simple timeline

1955	Psychogeography defined by Guy Debord as “the study of the precise laws and specific effects of the geographical environment, consciously organized or not, on the emotions and behavior of individuals.”
1956	The Lettrists joined the International Movement for an Imaginist Bauhaus to set a proper definition for the idea announced by Gil J. Wolman “Unitary Urbanism – the synthesis of art and technology that we call for — must be constructed according to certain new values of life, values which now need to be distinguished and disseminated.”
1958	Psychogeography combines subjective and objective knowledge and studies. Debord struggled to stipulate the finer points of this theoretical paradox, ultimately producing “Theory of the Dérive”, a document which essentially serves as an instruction manual for the psychogeographic procedure, executed through the act of dérive (“drift”)
1959	Guy Debord makes the film “On the Passage of a Few Persons Through a Rather Brief Unity of Time”
1961	Guy Debord makes the film “A Critique of Separation, “
1990	Researches undertaken by WNLA, AAA and the London Psychogeographical Association during the 1990s support the contention of Asger Jorn and the Scandinavian Situationniste (Drakagygett 1962 – 1998) that the psychogeographical is a concept only known through practise of its techniques
1992 -1996	The Workshop for Non-Linear Architecture undertook an extensive programme of practical research into classic (situationist) psychogeography in both Glasgow and London. The discoveries made during this period, documented in the group’s journal Viscosity, expanded the terrain of the psychogeographic into that of urban design and architectural performance.
2003	In the United States, separate events known as Provflux and Psy-Geo-conflux have been dedicated to action-based participatory experiments, under the academic umbrella of psychogeography.