Let the ham sit at room temp for 1-2 hours before baking. Preheat oven to 275 degrees F. Place the oven rack on the lowest level -- so that the center of the ham will be level with the center of the oven while baking, ensuring even cooking/reheating.
Add 1 cupwater to the roasting pan. Remove disc from the ham. Place ham face down so that all the juices can baste the ham all over. If you have a rack, place the ham on it, but if you don't, skip this step. Tent ham with foil to secure moisture.
Bake for about 2-1/2 hours (or 15 minutes per pound). About 30-45 minutes before it is fully reheated, take the ham out of the oven and baste with pan drippings.
Make the ham glaze: Whisk honey, brown sugar, and spices in a microwave-safe bowl until combined. Microwave on high for 30 seconds. Stir and cook again for 30 seconds more. Brush half of the honey mixture all over the ham, including in between the slices, so that mixture can reach the middle of the ham.
Return ham to the oven, uncovered, bake for the remaining time left (30-45 minutes). Insert a instant-read thermometer into the thickiest part of the ham but not touching the bone. The ham is ready when it reads 135 F. Brush ham again with remaining glaze and serve ham with pan drippings.
STORAGE: Store leftovers in an airtight container in the fridge for up to 5 days. Freeze small amounts in freezer bags for up to 3-4 months.