NCTC has published a "daily planner" version of its counterterrorism calendar since 2005, a pdf version of which was available to the public on its website. The new interactive version of the calendar provides user-friendly access to information on known terrorist groups, individual terrorists, and technical information on topics such as biological and chemical threats. This information is enhanced with locator maps, photographs, and lists of helpful links specific to each threat area.

A special feature of the site is an interactive counterterrorism timeline which allows users to explore key dates, including the anniversaries of terrorism-related incidents dating as far back as 1950, when two Puerto Rican Nationalist Party members attempted to assassinate President Harry Truman. Each month of the timeline also provides a "Terrorist Profile" and a "This Day in History" highlight with accompanying photographs.

Key U.S. and other national holidays, as well as Christian, Islamic, and Jewish holidays are also noted. Each day shows both the Gregorian date and the equivalent Islamic calendar (Hijra) date.

The NCTC "daily planner" version of the calendar has been an invaluable and prized resource for law enforcement and national security personnel, providing easy access to terrorist profiles, information on terrorist groups, and first-responder information on biological threats, chemical agents, medical symptoms of nerve agent exposure, and more. The new interactive calendar will provide easier, broader access to this information, and should serve as a valuable research tool for emergency services providers, government personnel, and the general public.

The unclassified counterterrorism calendar originated within the Intelligence Community as a wall calendar during the 1990s, and transformed into a daily planner in 2003. It has been published by NCTC since 2005. Approximately 30,000 copies of the print version of the 2007 calendar have been distributed this year.