What is the setting of The Mosquito Coast by Paul Theroux?

Mosquito Coast is set in Massachusetts and Honduras around 1979 to 1981. The timeline is evidenced by the fact that the Spellgoods have a home video game system with Space Invaders, a game first released for the Atari 2600 in 1980. The existence of the 1976 movie Rocky on video supports this approximate timeline.