Pedantic pet-peeve
It really irritates me when folks refer to the duration, amount, level, or increment of something in "seasons" rather than in units of time such as years, months or the psuedo-standard unitless 'points'.
I am, of coarse, aware that seasons are accurately demarcated by the solstices and meridians, but, outside of meteorology they're almost never used in that context. I'm usually not one to be overly donnish, but there's simply no reason, outside of social customs and politics, to inject further ambiguity into dictive discourse--especially when it comes to measurements.