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, ...

The Prime Meridian is the imaginary line running between the North and South Poles that's used to indicate 0° longitude. It passes through Greenwich in southeast London, and is therefore sometimes ...

__1884: __Geographers and astronomers adopt Greenwich as the Prime Meridian, the international standard for zero degrees longitude. The late 19th century was an era of standardization. With the Second ...

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 ...

Geocoding is the process of converting user-friendly addresses into geographic coordinates. When this process fails—due to typos, non-existent addresses, or corrupted data—mapping systems sometimes ...

Scientists have explained why the Greenwich Meridian appears to have drifted substantially east (or to the right, if you stand in the park and face north). Now the big question is: should the marker, ...

The prime meridian has shifted a few hundred feet. An astronomer helped figure out why. In 1884, a delegation of international representatives convened in Washington, D.C. to recommend that Earth's ...