平へい均きん太たい陽よう時じ

noun

mean solar time

Technical astronomical term for time based on the average motion of the sun, as opposed to apparent solar time.

• 平へい均きん太たい陽よう時じは、実じっ際さいの太たい陽ようの動うごきではなく、平へい均きん的てきな太たい陽ようの位い置ちに基もとづいて決きめられる。

  Mean solar time is determined based on the average position of the sun, not the actual motion of the sun.