When were World Standards Day?

Congratulations to everyone who celebrated World Standards Day, on October 14, 2017. The official announcement explains:

Each year on 14 October, the members of the IEC, ISO and ITU celebrate World Standards Day, which is a means of paying tribute to the collaborative efforts of the thousands of experts worldwide who develop the voluntary technical agreements that are published as international standards.

The USA celebrated World Standards Day on October 19, 2017. The official announcement says:

World Standards Day was initially launched in 1970, and is now celebrated by nations around the globe. U.S. activities are organized annually by a planning committee consisting of representatives from the standards and conformity assessment community.

Last year, 2016, as per standard, World Standards Day were celebrated in a similar manner, as was the case in years previous to 2016.