Argentina

1948 Agriculture Day WM: 11

1948 The 200th Anniversary of the Rio de la Plata Postal Service

1948 Road Traffic Safety Day

1948 The 5th Anniversary of the Coup d’Etat WM: 9

1948 American Indian Day

1947 Youth Crusade for World Peace WM: 11

2017 The 50th Anniversary of the Galileo Planetarium

2017 The 100th Anniversary of the First Postal Flight Between Buenos Aires and Montevideo

2017 Traditional Ponchos

2017 The 10th Anniversary of the Death of Roberto Fontanarrosa, 1944-2007