Below is the current list of participating cities.  We are 23 locations in 13 countries, practicing simultaneously (or almost) during the weekend of June 18-19.  YES!

Perth, Australia
Coolah, Australia
Wellington, New Zealand
Gothic, Colorado
Boulder, Colorado
Chicago, Illinois
Washington, DC
Brooklyn, New York
Chertsey, Quebec
Earthdance, Plainfield, Massachusetts
Watertown, Massachusetts
Buenos Aires, Argentina
Cayenne, French Guiana
Lisbon, Portugal
Bordeaux, France
London, United Kingdom
Cardona, Spain
Palma, Spain
Paris, France
Geneva, Switzerland
Cavigliano, Switzerland
Livorno, Italy
Saint Petersburg, Russia
Perth, Australia (full circle)