Geocentric Coordinate Time system. When the Earth is at perihelion in January, TCG ticks even more slowly than it does on average, due to gravitational time dilation from being deeper in the Sun's gravity well and also velocity time dilation from moving faster relative to the Sun. At aphelion in July the opposite holds, with TCG ticking faster than it does on average. 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.
Central House (Central, Alaska) Central House (Central, Alaska) The Central House, also known as Erickson & Stade's, at Mile 128 on the Steese Highway in Central, Alaska, was a log structure built in 1926 by Riley Erickson and John Stade, replacing an 1894 log and sod structure that was burned in a 1925 fire. It served as a roadhouse restaurant and hotel, and was listed on the National Register of Historic Places in 1978. Located on Crooked Creek, it was deemed significant for its historical role as a central focus for miners of other creeks that were Birch Creek tributaries and for serving travelers.