Now humans have been living on the space station for 20 years

And this mealtime tradition, which has helped the expedition crews to bond and observe normalcy as their football field-size home orbits Earth at 17,500 miles per hour, is exactly how the current crew will celebrate the anniversary.

"It's an incredible honor for us to be up here on the 20th anniversary," said Kate Rubins during a press conference Friday from the space station. "We all feel very lucky. We'll have a simple dinner celebration. On the ISS, we really enjoy getting together and having dinners. And the three of us will take a nice long view out of cupola to appreciate both Earth and the space station."

The cupola is the space station's seven-window observatory. There, the crew can witness the 16 sunrises and 16 sunsets the space station experiences each day.
Rubins, along with Russian cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov, arrived at the space station on October 14. It's the second expedition for both Rubins and Ryzhikov. "Since the anniversary is on a Monday, we'll be celebrating through hard work," Kud-Sverchkov said. "And we will be remembering those who have been flying here for 20 years and all the 63 expeditions here before us. We really appreciate them."