unit of time
measurement unit for time
academic quarter
division of the academic year into four parts
month
irregular unit of time dividing a calendar year
Planck time
smallest describable unit of time
Earthly Branches
an ancient ordering system of 12 ordinals, from east to west, also used in the dating system for time, astrological traditions, zodiac and ordinals in East Asia countries
tierce
unit of time; 1/60 of a second
decade
period of 10 days used in the French Republican Calendar instead of weeks of other durations such as 7 days
picosecond
SI unit of time equal to one trillionth of a second or 1/1,000th of a nanosecond
work week
part of the seven-day week that is devoted to labour
half year
unit of time measurement
light-foot
time taken for light to travel 1 foot, approximately equal to 1 ns
trimester
temporal division used in human pregnancy
years ago
Scientific unit of time
olympiad
period of four years associated with the Olympic Games of the Ancient Greeks
olympiad
period of four years associated with the Olympic Games of the Ancient Greeks
Metonic cycle
period of very close to 19 years that is nearly a common multiple of the solar year and the synodic (lunar) month
lustrum
unit of time, usually a five year period
annum
conventional fixed unit of time, derived of the SI system, equal to the mean duration of the tropic year independantly of the geographic location, estimated to 365.2422 fixed days of 86400 seconds, near from the mean year observed on ground
Heavenly Stems
East Asian (Chinese) system of 10 ordinals, first appeared during the Shang dynasty (ca. 1250 BCE); together with the 6 Earthly Branches produce a compound cycle of 60 days or 60 years
fourth-month period
unit of time comprising four months
gigasecond
SI unit of time
cosmological decade
a logarithmic division of the lifetime of the cosmos, such that each successive cosmological decade represents a tenfold increase in the total age of the universe
sidereal year
time taken by the Earth to orbit the Sun once with respect to the fixed stars
five-day week
week considered as span of five days
Great Year
Length of time
Prophetic Year
a period of 360 days, used in some theories of Biblical exegesis (and in some cases interpreted as 360 years instead, according to the day–year principle)
Gregorian year
unit of time
century
unit of time lasting 100 years
day
unit of time lasting 24 hours, derived from the period of Earth's rotation about its axis
week
unit of time
chronon
Theoretical Unit
era
subdivision of geological time; shorter than an eon and longer than a period
tun
Mayan unit of time; 360 days
sol
solar day: unit of time on Mars
svedberg
unit of time for the rate at which a particle settles down within a fluid
academic term
portion of a school year ending with grade assignments
season
traditional annual period when members of a social elite hold social events
Julian century
unit of time often used in astronomy
shake
informal unit of time equal to 10 nanoseconds
lunar year
a period of 12 synodic lunar months, being about 354.5 days
solar year
time unit
Javanese year
onsists of eight years and is divided into an eight-year cycle called Windu