National Statistics day is observed on which of the following Day ?

In recognition of the notable contributions made by (Late) Professor Prasanta Chandra Mahalanobis in the field of economic planning and statistical development, the Government of India designated 29th June every year, coinciding with his birth anniversary, as the Statistics Day to be celebrated at the national level. The objective of this Day is to create public awareness, among the people specially the younger generation for drawing inspirations from Prof. Mahalanobis about the role of statistics in socio-economic planning and policy formulation.