The following excerpts from Article XI of the ILWU International Constitution are reprinted here for reference.
SECTION 1. A Convention of the International shall be held every three (3) years beginning at 10 a.m. on the second Monday following Easter Sunday. However, the International Executive Board may authorize a different Convention location and starting date which shall be no earlier than March 1st nor later than June 30th of the year in which the Convention is to be held...