Stir the chopped dates and orange liqueur together in a small bowl. Let them soak for 30 minutes, stirring every 10 minutes, until glossy and plump.
Preheat the oven to 350°F (175°C). Butter the bottom of an 8½ × 4½ × 2½-inch loaf pan, line it with parchment paper, then butter the parchment and sides. Dust with flour and tap out the excess.
Beat the butter and brown sugar on medium speed for 1 minute until lighter in color and slightly fluffy. Scrape down the bowl, then add the egg, vanilla, and orange zest on low speed.
Sift the flour, baking powder, baking soda, cinnamon, nutmeg, cloves, and salt into a separate bowl. Add one-third of the flour mixture to the butter mixture, followed by half the orange juice. Repeat, ending with the remaining flour mixture, and mix just until combined.
Fold in the soaked dates with all their soaking liquid and the chopped pecans. Spread the batter evenly in the prepared loaf pan and smooth the top.
Bake for 50–60 minutes, until the top is deep golden brown and a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for 10 minutes. Run a knife around the edges, turn it out onto a wire rack, remove the parchment, and cool for about 30 minutes before slicing.
To make the orange cream cheese spread, beat the cream cheese, granulated sugar, and orange zest on medium speed for about 30 seconds, until smooth and creamy. Serve alongside the sliced bread.