October 28 each year, to commemorate Greek Prime Minister  Ioannis Metaxas ' (in power from August 4, 1936, until January 29, 1941) rejection of the  ultimatum  made by Italian dictator  Benito Mussolini  on October 28, 1940. This ultimatum, which was presented to Metaxas by the Italian ambassador in Greece,  Emanuele Grazzi