International Old Age Day - Every Year on October 1

About World Health Organization(WHO)

WHO is the directing and coordinating authority for health within the United Nations system. It is responsible for providing leadership on global health matters, shaping the health research agenda, setting norms and standards, articulating evidence-based policy options, providing technical support to countries and monitoring and assessing health trends.

 1 October: International Day of Older Persons:

A demographic revolution is underway throughout the world. Today, world-wide, there are around 600 million persons aged 60 years and over; this total will double by 2025 and will reach virtually two billion by 2050 - the vast majority of them in the developing world.