Observed every year on July 11, World Population Day seeks to raise awareness about population-related challenges and their far-reaching social, economic, and environmental implications. The observance was established in 1989 by the United Nations, inspired by the milestone of ‘Five Billion Day’ on July 11, 1987, when the global population hit five billion. The proposal came from Dr. K.C. Zachariah, a senior demographer at the World Bank, recognising the urgent need to reflect on the pace and direction of population growth.