Geocentric Coordinate Time Geocentric Coordinate Time Geocentric Coordinate Time (TCG - Temps-coordonnée géocentrique) is a coordinate time standard intended to be used as the independent variable of time for all calculations pertaining to precession, nutation, the Moon, and artificial satellites of the Earth. It is equivalent to the proper time experienced by a clock at rest in a coordinate frame co-moving with the center of the Earth: that is, a clock that performs exactly the same movements as the Earth but is outside the Earth's gravity well. It is therefore not influenced by the gravitational time dilation caused by the Earth. TCG was
Unconverted long-term prisoners in North Korea, and Revised Romanisation for places now in South Korea. Unconverted long-term prisoners Unconverted long-term prisoners is the North Korean term for northern loyalists imprisoned in South Korea who never renounced "Juche". The North Korean government considers them to be "pro-reunification patriotic fighters", while South Korean scholars have described them as "pro-communist spies". In March 1998, South Korean president Kim Dae-jung declared an amnesty for long-term prisoners over the age of 70, as well as some suffering from disease. In February 1999, President Kim declared another amnesty for 17 unconverted long-term prisoners. In 2000, as part of the