Month Codes
| January | F | May | K | September | U |
| February | G | June | M | October | V |
| March | H | July | N | November | X |
| April | J | August | Q | December | Z |
Year Codes
Year codes refer to the last digit of the year: 2007 is expressed as 7.
The current year and the next five years. A new calendar year will be added following the termination of trading in the December contract of the current year.
Customer Support
For customer support for electronic trading, including error trades, contact the CME Globex Control Centre:
+1 312 456 2391
