These are the scheduled dates for the Cisco events

Event Name Date Location Technology / Vertical
March 2010
RSA 2010 March 1-4, 2010 San Francisco, California
HIMSS 2010 March 1-4, 2010 Atlanta, Georgia Healthcare
VoiceCon 2010 March 22-25, 2010 Orlando, Florida Enterprise
CTIA Wireless 2010 March 23-25, 2010 Las Vegas, Nevada Service Provider
ISC West 2010 March 24-26, 2010 Las Vegas, Nevada
April 2010
NAB Show April 12-14, 2010 Las Vegas, Nevada
Interop Las Vegas 2010 April 25-30, 2010 Las Vegas, Nevada
May 2010
EMC World May 10-13, 2010 Boston, Massachusetts
NCTA/The Cable Show 2010 May 10-14, 2010 Los Angeles, California Service Provider
The Cable Show May 11-13, 2010 Los Angeles, California
June 2010
Interop Tokyo 2010 June 7-11, 2010 Tokyo, Japan
ISTE (formerly NECC) June 27-30, 2010 Denver, Colorado Education
Cisco Live 2010 June 27 – July 1, 2010 Las Vegas, Nevada

More info on http://www.cisco.com/../events_calendar_tool_launch.html