
10,191 AGFrom the work
Atreides on Arrakis
House Atreides takes control of Arrakis at the opening of Dune.
Sources: Frank Herbert, Dune. Chilton Books, 1965. Appendix II and Appendix IV.

Frank Herbert’s Dune
An Imperial calendar spans millennia, using the foundation of the Spacing Guild as its reference.
Selected historical date
10,191 AG
From the work

House Atreides takes control of Arrakis at the opening of Dune.
Sources: Frank Herbert, Dune. Chilton Books, 1965. Appendix II and Appendix IV.
AG means After Guild; BG means Before Guild. The opening of Dune is associated with 10,191 AG in the novel’s dating convention.
This overview uses Frank Herbert’s original novels. Later eras are shown in story order where exact dates vary; expanded-universe chronologies are not silently mixed in. There is no Earth-time anchor.
Historical dates are not synchronized with today. Artwork is illustrative.