Worldwide
Pluto Day
Always a planet to us.
When is Pluto Day?
Every year on February 18.
What is Pluto Day?
Pluto Day, observed on February 18, marks the day in 1930 when Clyde Tombaugh at Lowell Observatory in Flagstaff identified a moving point of light on photographic plates — the first detection of what was then called the ninth planet. The name was suggested by 11-year-old Venetia Burney in Oxford, and for 76 years Pluto held its place in school textbooks. In 2006 the International Astronomical Union moved it to the new 'dwarf planet' category — a decision still argued over by anyone who learned their solar system before then.
How to celebrate
Mark the day with a poster made in Dayfeed — pick your favourite photo as the background, share it to your story or group chat, and set a reminder so you never miss it next year.
Hashtags
- #PlutoDay
- #Pluto
- #ClydeTombaugh
- #PlanetOrNot
Try it: save this day's poster to your Pinterest board.
This is the Pluto Day poster, made with Dayfeed. Pin it to your board — no app needed.
Save to Pinterest
In the Dayfeed app
Never miss a special day
Turn this day into a poster.
100 designs, your photo, ready for Instagram.
