This this and this
Lower sun angle too between a 1pm game in Sep versus Dec
Lets also sprinkle in some dynamic weather patterns...Mia/TB/Jax/Car should be prone to an occassional sun-cloud/monsoon game in early season(Sep)......every few years CA games in late season should be prone to rain (el nino years).....northern games Chi/Cle/Buf/NE should have an occasional snowstorm game in late season
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