Reminder - NA<>EU S2S Party is this Saturday, November 19. Most activity is scheduled for 1400z - see all the alerts at that time. Yes, that's really early to be on a summit here on the left coast. 
 
Call "Summit-to-Summit" (S2S on CW) or perhaps "CQ DX" instead of CQ if you are specifically looking for calls from EU. Watch the spots and see if you can hear any station in the EU and respond "Summit-to-Summit". 

Remember that the ARRL Phone Sweepstakes begins at 2100z - you'll want to be done on non-WARC bands before that on SSB.

Here's some information on the SOTA Reflector:
http://reflector.sota.org.uk/t/north-america-europe-sota-s2s-party-19th…

...and on the NA SOTA Reflector the thread starts here:
https://groups.yahoo.com/neo/groups/nasota/conversations/messages/29143