New Year's Eve is causing Nasa to re-plan the launch date of its shuttle Discovery, as the spacecraft's technology has not been designed to fly during a year change.
The space agency is delaying the shuttle's launch so that it will not be in orbit as clocks strike midnight around the world, reports ZD Net.
Central Florida's Kennedy Space Center planned to host the launch on December 7th 2006, but it may be brought back a day to December 6th to create an added cushion.
The mission to the International Space Station is due to last 12 days but unforeseen delays may lead to the craft being in space as 2006 becomes 2007.
"The shuttle computers were never envisioned to fly through a year-end changeover," Wayne Hale, space shuttle programme manager, said at a briefing.
Nasa is aiming to complete around 14 more shuttle flights in order to finish work on the $100 billion International Space Station, Reuters reports.