出典:Wiktionary
出典:『Wiktionary』 (2010/07/17 12:25 UTC 版)
leap-year
出典:Wikipedia
出典:『Wikipedia』 (2011/06/03 05:39 UTC 版)
A leap year (or intercalary or bissextile year) is a year containing one extra day (or, in the case of lunisolar calendars, a month) in order to keep the calendar year synchronized with the astronomical or seasonal year. Because seasons and astronomical events do not repeat in a whole number of days, a calendar that had the same number of days in each year would, over time, drift with respect to the event it was supposed to track. By occasionally inserting (or intercalating) an additional day or month into the year, the drift can be corrected. A year that is not a leap year is called a common year.
1カ年
a year
a year
a leap year is an intercalary year
凶年.
閏年.
まる一年
1カ年
凶年.
the coming year
a year
まる一年
a year
年がたつ
年がたつ
年がたつ