Related articles:
Julian calendar
Gregorian calendar
Islamic calendar
Hebrew calendar
Week-day names
Solstice
Leap second
The Pirates of Penzance
Key terms:
calendar
month
leap year
hebrew
adar
leap day
gregorian calendar
divisible
vernal equinox
ides
year modulo
every four years
intercalary month
extra day
lunisolar calendar
revised julian calendar
common years
hebrew calendar
wednesday or friday
tropical year
synchronized
astronomical
sabbath
roman republican calendar
hindu calendar
full moon
chinese calendar
inclusively
ante diem
anno
between the gregorian calendar
intercalated
last five days of february
islamic calendar
calendar will
intercalary day
vi kal
bis
extra month
day to february
days instead
godina
doubled
year length
martii
rule gives
average year
counted
years evenly divisible
leap else
Search external links cited by footnotes on Wikipedia page Leap year:
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