| Year | Month | Event |
| 1863 | January 12 | Birth in Kolkata |
| 1879 | | Enters Presidency College |
| 1880 | | Transfers to General Assembly Institution |
| 1881 | November | First meeting with Sri Ramakrishna |
| 1882-1886 | | Association with Sri Ramakrishna |
| 1884 | | Passes B. A. Examination |
| | Father passes away |
| 1885 | | Sri Ramakrishna’s last illness |
| 1886 | August 16 | Sri Ramakrishna passes away |
| Fall | Establishes Baranagar Math |
| December 24 | Informal vow of sannyasa at Antpur |
| 1887 | January | Formal vows of sannyasa at Baranagar Monastery |
| 1890-1893 | | Travels all over India as itinerant monk |
| 1892 | December 24 | At Kanyakumari, South India |
| 1893 | February 13 | First public lecture, Secunderabad, South India |
| May 31 | Sails for America from Mumbai |
| July 25 | Lands at Vancouver, Canada |
| July 30 | Arrives in Chicago |
| August | Meets Professor John Ft. Wright of Harvard University |
| September 11 | First address at Parliament of Religions, Chicago |
| September 27 | Final address at Parliament of Religions |
| November 20 | Begins mid-western lecture tour |
| 1894 | April 14 | Begins lectures and classes on East Coast |
| May 16 | Speaks at Harvard University |
| July-August | At Green Acre Religious Conference |
| November | Founds Vedanta Society of New York |
| 1895 | January | Begins classes in New York |
| June 4-18 | At Camp Percy, New Hampshire |
| June-August | At Thousand Island Park on St. Lawrence river, N.Y. |
| August-September | In Paris |
| October-November | Lectures in London |
| December 6 | Sails for New York |
| 1896 | March 22-25 | Speaks at Harvard University, offered Eastern Philosophy chair |
| April 15 | Returns to London |
| May-July | Gives classes in London |
| May 28 | Meets Max Muller in Oxford |
| August-September | In the Europe for six weeks |
| October-November | Gives classes in London |
| December 30 | Leaves Naples for India |
| 1897 | January 15 | Arrives in Colombo, Sri Lanka |
| February 6-15 | In Chennai |
| February 19 | Arrives in Kolkata |
| May 1 | Establishes Ramakrishna Mission Association, Kolkata |
| May-December | Tours northwest India |
| 1898 | January | Returns to Kolkata |
| May | Begins North India pilgrimage with Western devotees |
| August 2 | At Amarnath, Kashmir |
| December 9 | Consecrates Belur Math |
| 1899 | March 19 | Establishes Advaita Ashrama at Mayavati |
| June 20 | Leaves India for second visit to the West |
| July 31 | Arrives in London |
| August 28 | Arrives in New York City |
| August-November | At Ridgely Manor, New York |
| December 3 | Arrives in Los Angeles |
| 1900 | February 22 | Arrives in San Francisco |
| April 14 | Founds Vedanta Society in San Francisco |
| June | Final classes in New York City |
| July 26 | Leaves for Europe |
| August 3 | Arrives in Paris for International Exposition |
| September 7 | Speaks at Congress of History of Religions at Exposition |
| October 24 | Begins tour of Vienna, Constantinople, Greece and Cairo |
| November 26 | Leaves for India |
| December 9 | Arrives at Belur Math |
| 1901 | January | Visits Mayavati |
| March-May | Pilgrimage in East Bengal and Assam |
| 1902 | January-February | Visits Bodh Gaya and Varanasi |
| March | Returns to Belur Math |
| July 4 | Mahasamadhi |