Sidereal Year: Average period of the revolution of the Earth around the Sun with respect to a fixed star. Its length is approximately 365 .256,4 mean solar days.

 

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Sidereal Year: Average period of the revolution of the Earth around the Sun with respect to a fixed star. Its length is approximately 365 .256,4 mean solar days.

Sidereal Time: The measure of time as defined by the diurnal motion of the vernal equinox. A sidereal day is equivalent to one complete rotation of the earth relative to the equinox, which is 23 hours, 56 . . . View Full Definition

Year: The interval required for the earth to complete one revolution around the sun. A sidereal year, which is the time it take for the earth to make one absolute revolution around the sun, is 365 . . . View Full Definition

Odd- Or Even-Year Usage: Biennial vacation property ownership where the owner can use his/her property every other year, termed either odd- or even-year depending upon the years when the interval week(s) are used. F . . . View Full Definition

Sidereal Zodiac: Based on the division of the circle of twelve constellations: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces; the basis for sidereal astrology.

Six-Year Molar: The first permanent tooth to erupt, usually between the ages of five and six.

Rolling Year: Under FMLA regulations, a rolling year is defined as a 12-month period measured backward from the date an employee first uses leave.

Sidereal Month: Average period of the revolution of the Moon around the Earth with respect to a fixed star, equal to 27.321,66 1 mean solar days.

Sidereal Day: Twenty-four sidereal hours equal to 23 hours, 56 minutes and 4 seconds of clock time.

Sum Of The Years Digits (SYD): Policies and guidelines that brokers must use to ensure that investors have the financial means to assume risks that they wish to undertake. These are enforced by the NASD and other self-reg . . . View Full Definition