(suggest different merge) |
(proposed merge) |
||
| Line 1: | Line 1: | ||
| − | + | {{merge with|Time measurements}} |
|
| + | A '''year''' is the [[time]] that a [[planet]] takes to [[orbit]] its [[sun]]. |
||
| − | A '''minute''' is a [[Earth_measurements|measurement]] of 60 [[second (time)|second]]s. [[Captain]] [[James T. Kirk]] remarked to the illusion of [[President]] [[Abraham Lincoln]] that the [[USS Enterprise (NCC-1701)|''Enterprise'']] could convert to minutes. |
||
| + | |||
| − | :''This may have been sarcastic [[humor]] on the part of Captain Kirk, as it is clear in other episodes that the [[Federation]] and its starships do indeed use minutes.'' |
||
| + | One [[Earth]] year is about 365¼ Earth days. |
||
| + | |||
| + | ==Background== |
||
| + | One Earth year is equal to 365.2425 Earth days in the {{w|Gregorian calendar}}. To compensate for the fraction of a day, a leap day is added to every year whose number is divisible by four, unless it is a century, unless it is divisible by 400. These leap years consist of adding an extra day to the month of [[February]]. Instead of the usual 28 days, there would be 29. |
||
| + | |||
| + | Scientists usually use a {{w|Julian year (astronomy)|Julian year}} of 365.25 days for measurements and scientific comparisons. |
||
| + | |||
| + | The {{w|Tropical year|mean solar year}} was 365.242190419 days in 2000 AD, and will be shorter still by the 23rd century. |
||
| + | |||
| + | ===See also=== |
||
| + | * [[Earth measurements]] |
||
| + | * {{Wikipedia}} |
||
[[Category:Time]] |
[[Category:Time]] |
||
Revision as of 21:41, 5 June 2007
Notice
It has been suggested that this article should be merged with Time measurements.
You can discuss this suggestion on the talk page.
You can discuss this suggestion on the talk page.
A year is the time that a planet takes to orbit its sun.
One Earth year is about 365¼ Earth days.
Background
One Earth year is equal to 365.2425 Earth days in the Gregorian calendar. To compensate for the fraction of a day, a leap day is added to every year whose number is divisible by four, unless it is a century, unless it is divisible by 400. These leap years consist of adding an extra day to the month of February. Instead of the usual 28 days, there would be 29.
Scientists usually use a Julian year of 365.25 days for measurements and scientific comparisons.
The mean solar year was 365.242190419 days in 2000 AD, and will be shorter still by the 23rd century.