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486_Col_Wolf,
CFS2 does not recognize the date and adjust accordingly, but remember that CFS2 was originally designed as more-or-less a tropical Pacific sim, I don't think they ever thought we'd push the envelope like this. In addition to the lack of seasonal recognition with textures, I've also recognized that CFS2 does not associate the time of year with the changing amount of daylight and darkness, AND the difference in daylight length with relation to latitude.
In the "Blitz" missions that I'm doing, I'm having to do the missions much later in the evening than they should be, just so I can achieve the darkness required to make the missions work.