Preheat oven to 325°F; place ham cut-side down in foil-lined roasting pan.

Whisk sugar, honey, mustard, vinegar, cloves, and cinnamon in medium bowl until smooth.

Generously brush half the glaze over entire ham surface.

Cover loosely with foil; bake 1 hour.

Uncover; baste with drippings and remaining glaze every 20 minutes during final hour.

Bake until internal temperature reaches 140°F and glaze caramelizes, about 2 hours total.

Rest 15 minutes before transferring to platter.