Seasons are sub-divisions of the year usually based on changes in ecology, weather or hours of daylight. The number of seasons varies between two (Polar) and six (India). My native Ireland has been described by cynics as now having only three seasons, as recent weather changes seem to have removed summer from our calendar.
The Egyptian year is divided into three seasons as they also did in the Indus civilisation. In an effort to make Plato’s 9,000 years more credible, commentators as early Giovanni Carli in the 18th century and Rafinesque in the 19th have suggested that Plato’s years were in fact ‘seasons’. The idea has gained further traction in more recent years with support from Axel Hausmann and Radek Brychta and most recently Rosario Vieni. Both Hausmann and Vieni presented papers to the 2005 Atlantis Conference, where Hausmann proposed that the ‘years’ be treated as seasons and so concluded that the demise of Atlantis took place in 3522 BC[629.359]. However, at the same conference Vieni presented his paper entitled “11,500 years ago…..” [629.337], obviously at that stage accepting Plato’s 9,000 years at face value. Three years later, he presented a paper to the 2008 Atlantis Conference which he entitled “About 5600 years ago….” [750.347], in which he had changed his understanding of Plato’s ‘years’ to be now seasons. While his intellectual honesty is to be applauded, I must point out that because a person changes their opinion, there is no guarantee that their second choice is any more correct than the first.
I am not convinced by the ‘seasons’ explanation, as it just seems to be a rather feeble attempt to explain away Plato’s 9,000 being a reference to solar years. Supporters of this ‘seasons’ explanation appear to be forced to look for an alternative to a literal 9,000 years as that figure conflicts dramatically with the Bronze Age setting of the Atlantis narrative and runs counter to the archaeological evidence for dating the foundation of both Athens and the Egyptian civilisation.
The more popular alternative suggestion of treating the ‘years’ as lunar cycles makes much more sense, as it brings the Atlantis story into the end of the Greek Bronze Age. It also matches the time of the destruction of the spring on the Acropolis (Crit.112d) and conforms to details on the Parian Marble. But perhaps most important of all is that the use of lunar cycles by the Egyptians for calculating time was noted by Eudoxus of Cnidos (410-355 BC) and also by Plutarch, Manetho, Herodotus and Diodorus Siculus.