District Milestones
- June 1960 – First club in District 320 – IWC Trivandrum
- 1970 – District 320 was formed with Chairman Seetha Rajamony when Malti Ratna was Association President
- February 1971 – First District Conference was held at Sri Lanka
- 1974 – District was bifurcated into District 320 and District 321
- 1985 – District 320 was bifurcated into District 320 and District 323
- 1991-92 – District 320 was grouped into 4 groups to be coordinated by 4 CGRs
- November 1995-96 – Silver Jubilee
- 1995 – District 320 co-hosted Triennial Conference in Cochin along with District 321 – Association President Vimala Abraham
- June 1997 – Installation of Shantha Mookken as Association President at Calicut
- June 1997 – First Association EC Meeting and Association Council Meeting at Coimbatore
- February 1998 – Hosted the 8th Triennial Conference at Coimbatore
- April 1999 – Incoming Chairman’s Institute for DC batch 1998-99 at Ooty
- June 2002 – Installation function at Coimbatore of Geetha Padmanaban as Association President
- June 2002 – First Association EC Meeting and Association Council Meeting at Coimbatore
- June 2007 – Installation function at Coimbatore of Gomathi Viswanathan as Association President
- June 2007 – First Association EC Meeting and Association Council Meeting at Coimbatore
- November 2008 – First South Asia Rally at Cochin
- October 2019 – Golden Jubilee Coimbatore
- April 2021 – Incoming Chairmen’s Institute at Coimbatore for 2021-22 District Chairmen