World Post Day celebrates the importance of postal services worldwide. It marks the anniversary of the Universal Postal Union’s establishment in 1874, which streamlined international mail delivery. This day highlights how postal services connect people globally and supports the economy and commerce, often showcasing advancements in postal technology and efficiency.

• Global Release
• First Release Sep 28, 2021
• Oct 6 → Oct 9 Annually
• Stamp Series International Days
• https://en.wikipedia.org/wiki/World_Post_Day