Preheat the oven to 350 degrees F. Butter the bottom of an 8 1/2 by 4 1/2 by 2 1/2-inch loaf pan. Line the bottom with parchment paper, then butter and flour the pan.
Combine the dates and orange liqueur in a small bowl and set aside for 30 minutes. Stir occasionally.
In the bowl of an electric mixer fitted with the paddle attachment, beat the butter and brown sugar together on medium speed for 1 minute. Scrape down the bowl. With the mixer on low, add the egg, vanilla, and orange zest. Sift together the flour, baking powder, baking soda, cinnamon, nutmeg, cloves, and salt. With the mixer still on low, add the flour mixture alternately with the orange juice to the creamed mixture, beating only until combined. By hand, stir in the dates with their liquid, and the pecans.
Pour the batter into the prepared loaf pan and smooth the top. Bake for 50 to 60 minutes, until a toothpick comes out clean. Cool in the pan for 10 minutes, then turn out onto a wire rack and cool completely.
Meanwhile, in the bowl of an electric mixer fitted with the paddle attachment, cream the cream cheese, sugar, and orange zest on medium speed until just combined.
Slice the bread and serve with the orange cream cheese on the side for spreading.
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