leap day
Quadrennial calendar addition
Leap day is February 29, the extra day added to the calendar every four years to keep it aligned with Earth's orbit around the sun.
People born on leap day—sometimes called leaplings—have birthdays that occur only once every four years, celebrating on February 28 or March 1 in other years.
cultural
One born February 29
- birthdayAnnual date of origin
- marriage proposalOffer of matrimony
- Irish traditionCultural practice from Ireland
- Scottish traditionCustomary practice from Alba
role reversal · courtship · folklore · celebration · birth certificate · February 28
calendric
Current global date system
- Julian calendarAncient Roman dating system
- solar yearOne complete Earth orbit
- timekeepingMeasuring duration's passage
- synchronizationAligning timing across systems
historical
Roman dictator and general
- Roman calendarAncient republic's year system
- AugustusRome's inaugural emperor
- papal bullSealed pontifical decree
leapling
One born February 29
- birthdayAnnual date of origin
- marriage proposalOffer of matrimony
- Irish traditionCultural practice from Ireland
Scottish tradition · role reversal · courtship · folklore · celebration · birth certificate · February 28
Gregorian calendar
Current global date system
- Julian calendarAncient Roman dating system
- solar yearOne complete Earth orbit
- timekeepingMeasuring duration's passage
Julius Caesar
Roman dictator and general
- Roman calendarAncient republic's year system
- AugustusRome's inaugural emperor
- papal bullSealed pontifical decree
- calendar quirksintercalation, Metonic cycle, precession, Julian calendar, lunar month
- daysMonday, Tuesday, Wednesday, Thursday, Friday
- calendar datesholiday, anniversary, birthday, deadline, appointment
- calendarscalendar, calendar year, calendar month, lunar calendar, almanac
- FebruaryBlack History Month, short month, Aquarius, Pisces, amethyst
- church calendarAdvent, Easter Sunday, Lent, Christmas, Pentecost