Added Trottier Symposium which just announced its dates this week. Incidentally this weekend is a near record as there are six different events going on more or less simultaneously - 3 in UK, 3 in US.
[table=head]Event|Start|End|City|Country
Skeptics on the Fringe 2014|8/2/2014|8/23/2014|Edinburgh|United Kingdom
The Skeptic's Toolbox|8/7/2014|8/10/2014|Eugene, OR|United States
Atheist Alliance of America|8/7/2014|8/10/2014|Seattle, WA|United States
World Humanist Congress 2014|8/8/2014|8/10/2014|Oxford|United Kingdom
Nine Worlds Geekfest skeptic track|8/8/2014|8/10/2014|London|United Kingdom
FreeOK 2014|8/9/2014|8/10/2014|Tulsa, OK|United States
3rd Colorado Secular Conference|8/15/2014|8/17/2014|Aurora, CO|United States
Robert Ingersoll Museum Mini-Conference|8/16/2014|8/17/2014|Amherst, NY|United States
FtBConscience 3|8/22/2014|8/24/2014|Online|United States
DragonCon Skeptrack|8/29/2014|9/1/2014|Atlanta, GA|United States
2014 Pennsylvania State Atheist/Humanist Conference|8/29/2014|8/31/2014|Pittsburgh, PA|United States
2014 Conference of Reason (South Dakota)|8/30/2014|8/30/2014|Rapid City, SD|United States
NZ SkeptiCamp 2014|9/6/2014|9/6/2014|Wellington|New Zealand
Denkfest|9/11/2014|9/14/2014|Zurich|Switzerland
Zeteticon (North Dakota)|9/12/2014|9/14/2014|Fargo, ND|United States
Tampa Bay CoR SkeptiCamp|9/14/2014|9/14/2014|Tampa, FL|United States
Apostacon|9/19/2014|9/21/2014|Omaha, NE|United States
SkeptiCamp Winnipeg 2014|9/27/2014|9/27/2014|Winnipeg, MB|Canada
Kritisk Masse (Critical Mass)|9/26/2014|9/28/2014|Oslo|Norway
Carolinas Secular Conference|9/26/2014|9/28/2014|Charlotte, NC|United States
Florida Secular Rally|10/5/2014|10/5/2014|Tallahassee, FL|United States
2014 Trottier Symposium: Are We Alone?|
10/6/2014|
10/7/2014|
Montreal, QC|
Canada
Free Flo 2014|10/10/2014|10/12/2014|Orlando, FL|United States
Freethought Day|10/11/2014|10/11/2014|Sacramento, CA|United States
Secular Conference: Religious-Right, Secularism and Civil Rights|10/11/2014|10/12/2014|London|United Kingdom
Vampires, Werewolves, and Witches|10/18/2014|10/18/2014|London|United Kingdom
The Skeptics of Oz|10/18/2014|10/18/2014|Wichita, KS|United States
Sexy Secular 2|10/18/2014|10/18/2014|Akron, OH|United States
Freedom From Religion Foundation 37th Annual National Convention|10/24/2014|10/25/2014|Los Angeles, CA|United States
International Freethought Film Festival|11/7/2014|11/9/2014|Atlanta, GA|United States
Ethical Education Weekend|11/7/2014|11/9/2014|Stony Point, NY|United States
Youth of Ethical Societies Conference|11/14/2014|11/16/2014|New York City, NY|United States
XX. Országos Szkeptikus Konferencia|11/15/2014|11/15/2014|Székesfehérvár, Budai|Hungary
Skepticon VII|11/21/2014|11/23/2014|Springfield, MO|United States
Australian National Skeptics Convention 2014|11/28/2014|11/30/2014|Sydney, NSW|Australia
New Zealand Skeptics Conference 2014|12/5/2014|12/7/2014|Auckland|New Zealand
[/table]
You also can find most of the above and more (videos!) in my
guide to skeptical events at Lanyrd. There is also a
list of just Skepticamp events here. For the benefit of Skepticamp organizers and anyone who is forum-phobic, a version of
this list is also posted at the Skepticamp Wiki.