Why so many days after Thanksgiving?

We know Thanksgiving is around 35 days before new year , so Thanksgiving 2266 can't be far from dec. 31, 2266, but see pictures:

Why so many days after Thanksgiving?

On star date 1535, charlie made turkeys for Thanksgiving 2266, among more dangerous mischief, yet the SAME year 2266 is more than 1000 dates later, how?

Why so many days after Thanksgiving?

Same year 2266 is 1300 dates later in less than 40 days because said same year! How is 40 days 1300 dates? Even if each date is less than one day, like star trek next generation 1000 per year this is more?

Even if 7 per day as hinted in episode charlie x, then 7x40 by 280 dates later must be 2267! So how is same year? Or mistake? In memory alpha? But alpha is considered canon so how?

Why so many days after Thanksgiving?
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