| 1908 | Foundation of the congregation – a humble beginning on 8 December with six members at Champakulam, Changanacherry. |
| 1911 | Vestition of the first five pioneer members. |
| 1916 | Perpetual profession of the first members. |
| 1917 | Constitution for the Congregation given by the Founder. |
| 1925 | Demise of our beloved Founder in Rome. |
| 1930 | Appointment of the first Mother General. Beginning of the Ernakulam unit. |
| 1935 | Founder’s mortal remains was brought back to Changanacherry. |
| 1952 | Beginning of Pala unit. |
| 1961 | Starting of Kothamangalam unit. |
| 1963 | Unification of the congregation on 15 September under one Mother General. The 4 independent units, Changanacherry, Ernakulam, Pala and Kothamangalam were raised to the status of provinces. |
| 1965 | Erection of Thalaserry province . Starting of Cenacle (Generalate) at Aluva. Golden Jubilee of the first members. Stepping into the mission soil (North East). |
| 1968 | Congregation was raised to the Pontifical status on 11 February. |
| 1969 | Blessing of the newly constructed generalate building at Cenacle, Aluva. |
| 1972 | Demise of Mother Chantal, our co-foundress on 27 May. |
| 1978 | Erection of Kanjirapally province. |
| 1980 | Erection of Mananthavady vice - province. |
| 1983 | Platinum Jubilee of the congregation. |
| 1984 | Beginning of the Mission Novitiate in North India. |
| 1986 | Solemn opening of the Tribunal for the process of Beatification of Mar Thomas Kurialacherry. |
| 1989 | Blessing of the Mission Formation House in Bhopal. |
| 1991 | Closing of the diocesan process for the Beatification of our Founder. |
| 1994 | First step in African mission. |
| 1997 | Erection of Mananthavady province. |
| 1998 | Erection of Jagdalpur, Ujjain, Punjab, Satna and Dimapur vice provinces. |
| 2001 | Erection of Thrissur vice province. |
| 2003 | Erection of Thamarasserry, Palakkad, Idukki, Jagdalpur, Ujjain, Punjab, Satna, Dimapur and Orissa provinces. |
| 2004 | Appointment of the mission superior & councillors for the African mission. |
| 2005 | Starting of the formation programme in East Africa. |
| 2006 | Blessing of Corpus Christi central house at Ottiende, East Africa. Starting of the Zion Vidyabhavan (Theology Course) at Cenacle. |
| 2007 | Blessing of the renovated chapel at Cenacle, Aluva. Inauguration of the centenary celebration on 8 December |
| 2008 | Centenary year and celebrations Erection of East African region, Tamil Nadu and Andhra regions |
| 2009 | Erection of Gujarat and Balasore regions |
| 2010 | Possessio for the beatification of our Founder studied and approved by Congregation for Saints. |