SIDEREAL YEAR


Meaning of SIDEREAL YEAR in English

Function: noun

Date: 1681

: the time in which the earth completes one revolution in its orbit around the sun measured with respect to the fixed stars : 365 days, 6 hours, 9 minutes, and 9.5 seconds of mean time

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.