For upcoming 2013 retreats by Choegyal Namkhai Norbu in the U.S., please visit these links:

 

May 22nd, New Mexico:

Introductory Public Talk on Dzogchen

 

May 24th-26th, New Mexico, Choegyal Namkhai Norbu at Tara Mandala:
http://taramandala.org/program/dzogchen-retreat/

May 31-June 2nd, New York City:
http://tsegyalgar.org/localcenters/kundrolling/kundrollingevents/retreatwithchoegyal

June 7-12, Tsegyalgar East:
http://tsegyalgar.org/localcenters/tsegyalgareast/tsegyalgareastcale/retreatwithchoegya2/

 

June 14 – June 21, Tsegyalgar East Santi Maha Sangha level 2 retreat:
http://tsegyalgar.org/localcenters/tsegyalgareast/tsegyalgareastcale/santamahasanghawit/