ARRL 10m Contest
/The ARRL 10 Meter Contest is described as an event 'for Amateurs worldwide to exchange QSO information with as many stations as possible on the 10-metre band'.
This year it will take place during the second weekend of December 2018.
In terms of modes, only CW and SSB are permitted.
More Information - http://www.arrl.org/10-meter