Combine brown sugar, maple syrup, Dijon mustard, cinnamon and nutmeg in a medium bowl. Stir until blended and set aside.
Cut 1" cross-hatch pattern around ham about 1/4" deep.
Insert a clove at each corner of cross-hatch cuts.
Place ham, cut side down, on rack of roasting pan. Adjust racks in oven to ensure ham in pan will fit.
Preheat oven to 320.
Squeeze orange juice for oranges over ham.
Place squeezed oranges in pan under rack.
Generously spread prepared glaze over ham (up to half of the glaze).
Add water to bottom of pan
Heat for 2-3 hours, until internal temperature reaches 165, re-glazing every 30 minutes.
Allow to rest 20 minutes while basting with pan juices.