- sidereal noon
- звёздный полдень
Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
sidereal noon
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sidereal noon — noun : the instant when the March equinox crosses the upper meridian of a place … Useful english dictionary
Sidereal time — is a measure of the position of the Earth in its rotation around its axis, or time measured by the apparent diurnal motion of the vernal equinox, which is very close to, but not identical to, the motion of stars. They differ by the precession of… … Wikipedia
Sidereal day — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the … The Collaborative International Dictionary of English
sidereal day — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the … The Collaborative International Dictionary of English
Noon Gun — Seen firing on 4th September 2008 The Noon Gun has been an historic time signal in Cape Town, South Africa since 1806. The gun is situated on Signal Hill, close to the centre of the city … Wikipedia
Sidereal time — Time Time, n.; pl. {Times}. [OE. time, AS. t[=i]ma, akin to t[=i]d time, and to Icel. t[=i]mi, Dan. time an hour, Sw. timme. [root]58. See {Tide}, n.] 1. Duration, considered independently of any system of measurement or any employment of terms… … The Collaborative International Dictionary of English
sidereal day — A day measured by the transit of certain stars. A day which begins at the noon or middle of the day, in common parlance. 52 Am J1st Time § 14. A mean sidereal day is 23 hours, 56 minutes, 4.091 seconds of mean solar time. Rochester German Ins. Co … Ballentine's law dictionary
noon — Twelve hours after midnight, the sun being at meridian. Abbreviated M. The beginning of the sidereal day used by the astronomers. 52 Am J1st Time § 14. The middle of the day in common parlance … Ballentine's law dictionary
Mean noon — Mean Mean, a. [OE. mene, OF. meiien, F. moyen, fr. L. medianus that is in the middle, fr. medius; akin to E. mid. See {Mid}.] 1. Occupying a middle position; middle; being about midway between extremes. [1913 Webster] Being of middle age and a… … The Collaborative International Dictionary of English
calendar — calendrical /keuh len dri keuhl/, calendric, calendarial /kal euhn dair ee euhl/, calendarian, calendaric, adj. /kal euhn deuhr/, n. 1. a table or register with the days of each month and week in a year: He marked the date on his calendar. 2. any … Universalium
day — /day/, n. 1. the interval of light between two successive nights; the time between sunrise and sunset: Since there was no artificial illumination, all activities had to be carried on during the day. 2. the light of day; daylight: The owl sleeps… … Universalium
