Why does the whole world set its clocks by a hill in London? The answer is more important than maps and politics. It all ...

If you use your smartphone’s GPS to find Earth’s prime meridian – the north-south line marking zero degrees longitude – at Greenwich Observatory, you’ll notice something a bit odd. You won’t be ...

June 22 marks the 350th anniversary of the Royal Observatory Greenwich, the home of the historic Prime Meridian that is considered by many to be the birthplace of modern astronomy. To celebrate, we're ...

Universal Time (UT), adopted in 1928 by the International Astronomical Union, is the time standard used in astronomical almanacs, referencing the 0° longitude meridian (Greenwich). For high precision, ...

True Confessions (Again): I was a very logical but somewhat naive kid. The naivete lasted into my teenagery but this situation occurred when I was much younger. I’m certain I must have learned the ...

Recently there has been an unusual amount of interest in expanding U.S. territory. A better idea: why not go REALLY BIG and relocate the Prime Meridian from Greenwich, England, to Saint Paul, ...

Following the path of local waterways and the Greenwich Meridian, this free outdoor art exhibition stretches eight kilometers, linking Queen Elizabeth Olympic Park with The O2 center.