World Post Day Observed on 9 October with the Theme 'One Postal Network, Infinite Possibilities'
World Post Day was observed on 9 October 2026 on the theme 'One Postal Network, Infinite Possibilities', marking the founding of the Universal Postal Union at Bern, Switzerland on 9 October 1874 through the Treaty of Bern. It was created at the 1969 UPU Congress in Tokyo and renamed World Post Day at the 1984 Hamburg Congress. The UPU became a UN specialised agency in 1948 and is headquartered at Bern; India joined on 1 July 1876, the first Asian member. India marks National Postal Week from 9 to 15 October, with National Postal Day on 10 October, which is also World Mental Health Day.
The Universal Postal Union, founded in 1874, is the second-oldest international organisation after the International Telecommunication Union (1865) and became a UN specialised agency in 1948 | India Post, set up in 1854 under Lord Dalhousie, runs the world's largest postal network with over 1.5 lakh post offices | India's first postage stamp, the Scinde Dawk, was issued in 1852 in the Sindh province