Grease and flour of 12 cup Bundt cake pan. Heat oven to 350 F.
In a medium bowl combine the flour, baking soda, salt, cinnamon, and nutmeg; stir with a whisk or spoon to blend thoroughly.
In a mixing bowl with an electric mixer, beat the butter with the granulated and brown sugars until light and creamy. Add the eggs, one at a time, beating well after each addition. With the mixer on low speed, beat in about one-third of the dry mixture and then beat in about half of the applesauce.
Beat in another one-third of the dry mixture and the remaining applesauce. Slowly beat in the remaining dry mixture until the batter is well blended.
Fold in the dates and pecans.
Spoon the batter into the prepared Bundt cake pan.
Bake the cake for 45 to 55 minutes or until a cake tester or wooden pick inserted in the center of the cake comes out clean.
Cool in the pan on rack for 15 minutes and then invert the cake onto a serving plate to cool completely.