International Nurses Day is observed every year on ________ date ? By taleemified - May 17, 2020 83 (a) 11 May (b) 12 May (c) 13 May (d) 14 May International Nurses Day is annually observed on May 12. May 12 was chosen for celebrating this day as it is the birth anniversary of Florence Nightingale, the foundational philosopher of modern nursing.