May Copper futures will cease trading at noon (CDT). May Palladium futures will cease trading at noon (CDT). May Platinum futures will cease trading at 12:05 p.m. (CDT). May COMEX and ICE US Silver futures will cease trading at 12:25 p.m. (CDT). May COMEX and ICE US Gold futures will cease trading at 12:30 p.m. (CDT). June Natural Gas futures will cease trading at 1:30 p.m. (CDT).