rewrite this title With 16 sunrises a day, when does it become 2025 on the space station?

Life on the International Space Station (ISS) is anything but ordinary. The microgravity conditions mean you spend most of your time floating around the place, and the views from the windows are special, to say the least. Popping outside requires donning protective clothing, and going to the bathroom is a more complicated process than back on terra firma.

And due to the ISS orbiting Earth at around 17,000 mph, astronauts stationed there witness 16 sunrises and 16 sunsets in every 24-hour period. So how will the current crew — NASA astronauts Suni Williams, Butch Wilmore, Don Pettit, and Nick Hague, together with Russian cosmonauts Aleksandr Gorbunov, Alexey Ovchinin, and Ivan Vagner — know when to celebrate the arrival of 2025?

As 2024 comes to a close today, the Exp 72 crew will see 16 sunrises and sunsets while soaring into the New Year. Seen here are several sunsets pictured over the years from the orbital outpost. pic.twitter.com/DdlvSCoKo1

— International Space Station (@Space_Station) December 31, 2024

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Well, when earthlings began living aboard the space station nearly a quarter of a century ago, space officials spent some time thinking about this very issue before settling on a solution. They decided to set the clocks aboard the ISS to the Universal Time Clock (UTC), a time standard that’s closely related to the Greenwich Mean Time (GMT) zone in London.

It means that a new year officially begins aboard the space-based laboratory at 7 p.m. ET (4 p.m. PT) on January 31, which is midnight UTC/GMT. So as you read this, it’s already 2025 aboard the space station!

It’s true that each crew member may want to see in the new year according to the time zone of their home on Earth. But considering the U.S. and Russia have a total of 17 time zones between them, this could make for one very long party.

What usually happens is that the astronauts select an agreed time and meet up for a celebration inside one of the station’s many modules. They’ll enjoy some special food treats, though a champagne celebration is out of the question as alcohol isn’t allowed on the ISS.

Two astronauts who earlier this year never imagined they’d be in orbit on this special evening are American astronauts Suni Williams and Butch Wilmore. The pair arrived at the ISS in June on the first crewed flight of the Starliner spacecraft. But several technical issues with the Starliner meant that for safety reasons, the vehicle had to return home without them. Williams and Wilmore are now expected to return to Earth aboard a SpaceX Crew Dragon in March. It’s been quite an adventure for the pair, and seeing in a new year 250 miles above Earth will be surely be a memory they’ll cherish forever.