There is an overlap of seasons in the sim itself, compared to the textures. To make it easier, you can just click on what ever season you want to fly in from the WORLD menu. The days inbetween these dates are the matching ones. Everything will be fine except for the 2 months that are missing from this list: Match from MAY 19 - SEPTEMBER 22 and from OCTOBER 21 - MARCH 19. The mixed matched dates are: SEPTEMBER 23 - OCTOBER 20 and MARCH 20 - MAY 18.
