Sailors' aid may shut down
Tuesday 17 August 1999
The problem, known as "end-of-week rollover", could mean Global Positioning System (GPS) equipment will stop working.
GPS is a worldwide satellite-based system, used extensively by British sailors and pilots, which allows navigators with electronic receiving equipment to pinpoint their position anywhere on the globe.
The system, which was originally developed for military use, is run by the United States Defense Department, and the US government has issued warnings to pilots, sailors, hikers, climbers and others who rely on GPS.
The GPS end-of-week rollover happens about once every 20 years. The problem is that the GPS system keeps track of time by counting the number of weeks since its launch on 6 January, 1980 - up to a maximum of 1,024 weeks.
The GPS "counter" has now reached 1,023 weeks, and at midnight on Saturday Universal Time Coordinated (UTC) - the same as GMT (so 1am BST Sunday) - it will roll over to zero, presenting a problem for any user whose receiving equipment has not been programmed to cope. Hand-held receivers more than five years old are considered particularly likely to be affected.
- 1 Unseen Charlie and the Chocolate Factory chapter deemed 'too subversive' released
- 3 Joan Rivers: 'Palestinians deserve to be dead'
- 4 A teacher speaks out: 'I'm effectively being forced out of a career that I wanted to love'
- 5 Mexican woman becomes world’s 'oldest person' at 127
Israel-Gaza crisis: YouTube footage shows scale of destruction after 50 days of shelling
Keira Knightley topless: Conservative actress does own take on #Freethenipple campaign for Interview Magazine
iPhone 6 'hidden code' could indicate sharper screens or bigger phones
Joan Rivers: 'Palestinians deserve to be dead'
Ebola virus: It's ripped through towns – now the deadliest ever outbreak of the virus is heading for Africa's teeming cities
Robin Williams Emmys tribute led by Billy Crystal criticised for including 'racist' joke about Muslim woman
Rotherham child sex abuse scandal: Labour Home Office to be probed over what Tony Blair's government knew - and when
The Rotherham child abuse scandal is a tale of apologists, misogyny and double standards
What do immigrants really think of Britain? Polish immigrant's Reddit post goes viral
Do you realise just how foolish the UK looks?
With Douglas Carswell joining Ukip, my party has taken another giant step forward
- < Previous
- Next >
Negotiable: Randstad Education Plymouth: Randstad Education Ltd are seeking EY...
Negotiable: Randstad Education Plymouth: NEWLY QUALIFIED TEACHER WE CAN HELP ...
£55000 - £65000 per annum + Benefits + Bonus: Harrington Starr: Lead FE Softwa...
Negotiable: Randstad Education Plymouth: Year 4 Primary Teachers needed for Se...