The governor is hereby authorized and requested to issue annually a proclamation designating the eleventh day of November as Veterans Day and calling upon the people of Iowa to observe it as a legal holiday in honor of those who have been members of the armed forces of the United States, and urging state officials to display the American flag on all state and school buildings and the people of the state to display the flag at their homes, lodges, churches and places of business; that business activities be held to the necessary minimum; and that appropriate services and exercises be had expressive of the public sentiments befitting the occasion.