year, time time, sequential arrangement of all events, or the interval between two events in such a sequence. The concept of time may be discussed on several different levels: physical, psychological, philosophical and scientific, and biological.
..... Click the link for more information. required for the earth to complete one orbit about the sun. The solar or tropical year tropical year, time between successive vernal equinoxes ; 365 days, 5 hr, 48 min, 46 sec of mean solar time (see solar time ). The tropical year is the basis of the year used in the Gregorian calendar .
..... Click the link for more information. is measured relative to the sun and is equal to 365 days, 5 hr, 48 min, 46 sec of mean solar time (see solar time solar time, time defined by the position of the sun. The solar day is the time it takes for the sun to return to the same meridian in the sky. Local solar time is measured by a sundial .
..... Click the link for more information. ). The sidereal year sidereal year, time required for the earth to complete an orbit of the sun relative to the stars. The sidereal year is 365 days, 6 hr, 9 min, 9.5 sec of mean solar time (see solar time ).
..... Click the link for more information. , measured relative to the stars, is longer than the tropical year by about 20 min. The calendar calendar [Lat., from Kalends], system of reckoning time for the practical purpose of recording past events and calculating dates for future plans. The calendar is based on noting ordinary and easily observable natural events, the cycle of the sun through the seasons
..... Click the link for more information. year is used for practical purposes and always contains a whole number of days, the ordinary year being 365 days and the leap year 366 days.

year

Time required for the Earth to travel once around the Sun, slightly less than 365 ¹⁄₄ days. This fractional number makes necessary the periodic adjustment of days in any calendar that is to be kept in step with the seasons. In the Gregorian calendar, a common year contains 365 days, and every fourth year is a leap year of 366 days except for any year that is divisible by 100 but not divisible by 400 (e.g., 1900 was not a leap year).

year (redirected from years)

year

year
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