Last Trading Day for these MAY #FUTURES OPTIONS: #Copper; #Gold; #Silver; #Heating Oil; #Natural Gas; #RBOB Gas.

May Copper options will cease trading at noon (CDT). 
May COMEX and ICE US Silver options will cease trading at 12:25 p.m. (CDT).
May COMEX and ICE US Gold options will cease trading at 12:25 p.m. (CDT).
The May NYMEX Energy options listed here will cease trading at 1:30 p.m. (CDT).