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
Catholic (term) then also to the teaching of the church fathers and the councils". The term "Catholic" is commonly associated with the whole of the church led by the Roman Pontiff, the Catholic Church. Other Christian churches that use the description "Catholic" include the Eastern Orthodox Church and other churches that believe in the historic episcopate (bishops), such as the Anglican Communion. Many of those who apply the term "Catholic Church" to all Christians object to the use of the term to designate what they view as only one church within what they understand as the "whole" Catholic Church. In the English