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Leap Seconds (1741 words) |
 | Over the course of one year, the difference accumulates to almost one second, which is compensated by the insertion of a leap second into the scale of UTC with a current regularity of a little less than once per year. |
| Since the first leap second in 1972, all leap seconds have been positive and there were 23 leap seconds in the 34 years to January, 2006. |
| This scenario is analogous to that encountered with the leap second. |
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BIGpedia - Leap year - Encyclopedia and Dictionary Online (1688 words) |
| A leap year (or intercalary year) is a year containing an extra day or month in order to keep the calendar year in sync with an astronomical or seasonal year. |
| Leap years (which keep the calendar in sync with the year) should not be confused with leap seconds (which keep clock time in sync with the day). |
| In the Chinese calendar the leap month is added according to a complicated rule, which ensures that month 11 is always the month that contains the northern winter solstice. |
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