Pluto Demoted Day 2021

Pluto Demoted Day marks the decision that classified Pluto as a dwarf planet.

Frequently asked questions

When is Pluto Demoted Day 2021?

Pluto Demoted Day 2021 is on Tuesday, 24 August 2021.

What day of the week is Pluto Demoted Day 2021?

It falls on Tuesday.

How is Pluto Demoted Day calculated?

This event is observed every year on 24 August.