| DIPLOMAT | The International Day of ____s takes place on the anniversary of the foundation of the UN |
| PEACE | International Day of ___ (September 21) |
| SALLY | "___'s Take on the USA Today Crossword" (blog) |
| STEVENS | Cat, singer who released a new version of his 1971 song Peace Train on September 21 for the International Day of Peace (7) |
| GANDHI | Inspiration for the International Day of Non-Violence |
| PASTEUR | French microbiologist Louis ___, known for his breakthrough work on the spread of diseases and for setting many of the foundations of public health |
| OBIT | An old boy returns to it on the anniversary of the death (4) |
| PIDAY | Observance that falls on the anniversary of Einstein's birth |
| REGNALYEAR | Period starting on the anniversary of an English monarch's accession |
| ARMISTICEDAY | The anniversary of the signing of the truce that ended World War I, now kept on Remembrance Sunday (9,3) |
| BASTILLE | The anniversary of the storming of this Paris prison is celebrated by France on July 14 |
| OBELISK | The Flaminio ---, taken to Rome from Heliopolis by Augustus to mark the anniversary of the conquest of Egypt (7) |
| NURSES | International _ Day, celebrated worldwide on May 12, the anniversary of Florence Nightingale's birth (6) |
| MARCH | Month in which the anniversary of the assassination of Julius Caesar occurs |
| CINCODEMAYO | The anniversary of Mexico's victory over the French at Puebla in 1862, celebrated on May 5 (5,2,4) |
| SECONDOFOCTOBER | Mahatma Gandhi's 1869 birth date, now a national holiday in India and also the U.N. International Day of Nonviolence |
| INDIA | World's second-most populous country, where modern polo originated in 1859 with the foundation of the sport's first club in Silchar (5) |
| ALFRED | Which king of Wessex is credited with the foundation of the English navy? (6) |
| SLOANE | Irish physician whose 1753 bequest became the foundation of the British Museum and the Natural History Museum |
| HANS | Irish physician whose 1753 bequest became the foundation of the British Museum and the Natural History Museum |
