| 1876 |
|
Born in a farmhouse in Inawashiro town, Fukushima Prefecture. (Given the name Seisaku Noguchi) |
| 1878 | (2yrs) | Suffered a serious burn to his left hand at the end of April when he fell into a hearth. |
| 1883 | (7) | Entered Mitsuwa Elementary School (now called Okinajima Elementary School) |
| 1888 | (12) | Deputized for the teacher. (In the same year, Mt. Bandai erupted.) |
| 1892 | (16) |
Dr. Kanae Watabe, the head physician of Kaiyo Surgery in Aizuwakamatsu, operated on his damaged left hand. |
| 1893 | (17) |
Entered the Kaiyo Surgery as a trainee pharmacist, and studied medical science, English and French. |
| 1895 | (19) | Christened at the Wakamatsu Christian Church of Japan on 7th April. |
| 1896 | (20) |
Traveled to Tokyo in September, and passed the first half of the medical practitioner'sexam in October. He then became a janitor/student at the Takayama Dentistry and Medical Academy in November with the help of Dr. Morinosuke Chiwaki. |
| 1897 | (21) |
Passed the second half of the medical practitioners exam in October, and obtained a doctors license. He became a lecturer at the Takayama Dentistry and Medical Academy, and worked at the Juntendo hospital. |
| 1898 | (22) |
Became an assistant at the Infectious Diseases Research Laboratory. While back in his home town, he changed his name to Hideyo. |
| 1899 | (23) |
Acted as interpreter to Dr. Fleskiner during his visit to Tokyo. Worked at Yokohama Port Quarantine Office as an assistant quarantine doctor. |
| 1900 | (24) | Left Yokohama for America. |
| 1901 | (25) | Joined Dr. Fleskiner as an assistant at Pennsylvania University. |
| 1904 | (28) | Became a first grade assistant at the Rockefeller Medical Research Center. |
| 1907 | (31) |
Gained a Master of Science Honors degree from Pennsylvania University. Promoted to associate member of the Rockefeller Medical Research Center. |
| 1911 | (35) |
Awarded a degree as Doctor of Medicine from Kyoto Imperial University. Successfully cultivated pure 'Syphilis Spirochaeta'. He married Mary Darges. |
| 1913 | (37) |
Discovered and identified 'Spirochaeta Pallida' inside the brains of patients with 'paralytic paralytica' and 'myelopthisis'. Departed on a European lecture tour of many countries. |
| 1914 | (38) |
Sweden bestowed 'The Third Order of Merit' on him. Awarded a Doctorate of Science by Tokyo Imperial University. Became a regular member of the Rockefeller Medical Research Center. |
| 1915 | (39) |
The Japan Imperial Academy awarded him their 'Onshi-sho' prize. After fifteen years abroad, he returned to Japan on 5th September, where several welcoming parties were held in his honor. |
| 1918 | (42) |
Discovery of the Yellow Fever pathogen in Ecuador, for which he received worldwide praise. His mother, Shika, died on 10th November, aged 65. |
| 1923 | (47) | Became a Member of the Japan Imperial Academy. |
| 1925 | (49) | Decorated with the 'Shogoi'. |
| 1926 | (50) | Announced the Oroya pathogen. |
| 1927 | (51) | Announced the Trachoma pathogen. Departed for Africa in October to conduct research into Yellow Fever. |
| 1928 | (51) |
Succumbed to Yellow Fever whilst studying it, and died on 21st May in Accra, West Africa. (He is buried at Woodloan graveyard in New York.) |