- year. In
solar calendars, this is done by
adding an
extra day ("leap
day" or "
intercalary day") to a
common year of 365 days,
about once
every four years...
- A leap year (also
known as an
intercalary year or bis****tile year) is a
calendar year that
contains an
additional day (or, in the case of a lunisolar...
- addition, a 27- or 28-
day intercalary month, the
Mensis Intercalaris, was
sometimes inserted between February and March. This
intercalary month was formed...
- Ayyám-i-Há is a
period of
intercalary days in the Baháʼí calendar, when Baháʼís
celebrate the
Festival of Ayyám-i-Há. The four or five days of this period...
-
Hindu calendar with the
Metonic cycle's near
tropical years by
adding intercalary months and days at
irregular intervals. The
calendar has been used continuously...
-
doubled day within this part of
February was that
formerly reserved for Mercedonius, the
intercalary month that had been
replaced by the
single leap
day. In...
- the
calendar adds an
intercalary month in leap
years and
sometimes also an
intercalary day in
great leap years. The
intercalary month not only corrects...
-
Groundhog Day (Pennsylvania German: Grund'sau dåk, Grundsaudaag,
Grundsow Dawg, Murmeltiertag; Lunenburg, Nova Scotia: Daks
Day) is a
tradition observed...
- lengths, and
names of months.
Special days and
periods (such as leap
day or
intercalary day).
Alignment with
social cycles.
Alignment with
astronomical cycles...
- each. The 365th
day of the
solar cycle would be a year-end, "
intercalary" and
optionally holiday. In leap years, a
second "
intercalary day"
follows Sa****ay...
