Cs day???????

I know why u r curious to know that because u r cs. I didnt came across that there is something CS day or CWA day. 

The Government promoted on 4th October, 1968,  Institute of Company Secretaries of India under Section 25 of the Companies Act..

So "CS Day is on 4th October...

The Institute of Company Secretaries of India(ICSI) is constituted under an Act of Parliament i.e. the Company Secretaries Act, 1980 (Act No. 56 of 1980). ICSI is the only recognized professional body in India to develop and regulate the profession of Company Secretaries in India.

The Institute of Company Secretaries of India awards the certificate of bestowing the designation of Company Secretary(CS) to a candidate qualifying for the membership of the Institute. It was in 1960 that the Company Law Board started a course in Company Secretaryship leading to the award of Government Diploma in Company Secretaryship. As the number of students taking up the Company Secretaryship course grew, the Government promoted on 4th October, 1968, Institute of Company Secretaries of India under Section 25 of the Companies Act, 1956 for taking over from the Government the conduct of Company Secretaryship examination.

 The Institute of Company Secretaries of India (ICSI) has since been converted into a statutory body w.e.f. 1.1.1981 under the Company Secretaries Act, 1980.The Institute of company Secretaries of India (ICSI) has its headquarters at New Delhi and four regional offices at New Delhi, Chennai, Kolkata and Mumbai.

can someone explain, What was the reason for selecting 4th oct as CS day? 

To recognize the important role that company secretaries play in ensuring good governance and compliance in organizations. The day is aimed at raising awareness about the significance of the company secretary profession, and to acknowledge the contributions made by company secretaries towards the success of businesses and organizations. The day provides an opportunity for company secretaries to network and share their experiences, and to discuss current challenges and trends in the field.