acceleration of sidereal on mean solar time
ascension verse = sidereal hour angle
Greenwich mea sidereal time
Greenwich sidereal noon
Greenwich sidereal time
格林尼治恒星时
格林恒星时
格林威治恒星时
格林恒星时格林尼治恒星时
格林恒星时格林恒星时格林尼治恒星时
Greenwich time of sidereal noon
GST Greenwich Sidereal Time
local apparent sidereal time