Answer: October 9
Notes: World Post Day is celebrated every year on October 9 to highlight the importance of the postal system in daily life, global communication, and economic growth. This year marks the 150th anniversary of the Universal Postal Union (UPU), established in 1874 in Bern, Switzerland, which transformed international mail exchange. The theme for this year, “150 Years of Enabling Communication and Empowering People Across Nations,” honors the UPU's efforts to streamline international mail services and create a unified postal system for easier mail exchange between countries.
