The word "there" indicates a point in space, and the word "then" indicates a point in time. Is there a word that indicates a point in spacetime, equal in meaning to "there and then"?
In physics, a point in space-time is known as an event.
(and a series of events is known as the world line)
My guess for a term which isn't jargon would be something like "spatiotemporal position" or "spatiotemporal coordinates". While I can't access its definition, "Temporospatial" also exists and is probably a synonym.