[4] In 1977, the organization started an annual event, World Vegetarian Day.

[9] Since 1974, the NAVS has run an annual vegetarian summer conference[11] - originally for 9–10 days encompassing two full weekends, on a college or university campus (often in Pennsylvania).

In 199x the summer conference's name was changed to NAVS Vegetarian Summerfest (with all vegan meals).

[citation needed] The most frequent Summerfest site is the University of Pittsburgh-Johnstown (UPJ) in Johnstown, Pennsylvania.

[citation needed] Three international vegetarian conferences have been held simultaneously with the NAVS Vegan Summerfests.