. "a theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun takes at variable speeds"@en-us . "105890021"^^ . "05890021-n"^^ . "mean sun"^^ . . . "105547359"@en-us . . . "0"^^ . . . "mean sun"@en-us . . "0"^^ . "104527156"@en-us . .