#time_period__period__period_of_time  an amount of time; "a time period of 30 years"; "hastened the period of his recovery"
  subtype:  time_frame  hours.time_period {downtime uptime} {work_time time_off}  travel_time  indefinite_time_period  elapsed_time  duration  calendar_week  field_day  lifetime  elapsed_period_from_birth  period_from_birth_to_death  millennium  bimillennium  past  shelf_life  puerperium  time_of_life  calendar_day  festival {daytime nighttime}  morning_time  night  night.time_period  period_of_ignorance  eve.time_period  evening  week  fortnight  weekend  point_in_time  Indian_summer  year.time_period  schooltime  twelvemonth  year  semester  bimester  Olympiad  lustrum.time_period  decade  century  half-century  quarter-century  quarter.time_period  phase_of_the_moon  day.time_period  calendar_month  mid-January  mid-February  mid-March  mid-April  mid-May  mid-June  mid-July  mid-August  mid-September  mid-October  mid-November  mid-December  time_limit  term.time_period  trimester  particular_hour  silly_season  Golden_Age  silver_age  bronze_age  iron_age  Platonic_year {regulation_time extra_time}  time_of_year  dog_days  midwinter  season.time_period  season  long_time  long_run  drought.time_period  era  generation.time_period  prehistory  reign  early_days  dawn.time_period  evening.time_period  sufficient_time_period  sleep.time_period  term_of_a_contract  half_life  lunar_time_period  phase.time_period  multistage  watch.time_period  peacetime  wartime  term_of_enlistment  honeymoon.time_period  indiction  the_Great_Depression  prohibition_era  incubation_period  rainy_day  noviciate  heyday  running_time  historical_period  clotting_time  real_time  study_hall.time_period  usance
  instance:  Bronze_Age  Iron_Age  Stone_Age  Eolithic_Age  Paleolithic_Age  Mesolithic_Age  Neolithic_Age
  equal:  moment (pm)
  supertype:  time_measure__temporal_attribute_or_quality_or_measure  temporal duration or positions of time_points and time_intervals along the universal timeline
     supertype:  attribute_or_quality_or_measure  e.g., mass, mass unit, 1 kg, frequency, [2-3] hz, color, blue, speed, 1 m/s
        supertype:  non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
           supertype:  entity  something that can be "involved" in a situation
              supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
           supertype:  intangible  The collection of things that are not physical -- are not made of, or encoded in, matter. Every cyc#Collection is a cyc#intangible (even if its instances are tangible), and so are some cyc#individuals.  Caution: do not confuse `tangibility' with `perceivability' -- humans can perceive light even though it's intangible--at least in a sense.
              supertype:  partially_intangible__partiallyintangible  The collection of things that either are wholly intangible (see cyc#Intangible) or have at least one intangible (i.e. immaterial) part (see cyc#intangibleParts). This includes intangible individuals, such as instances of cyc#Number-General  or cyc#Agreement, as well as non-individuals (all of which are intangible), i.e. instances of cyc#SetOrCollection.  It also includes things that have both tangible and intangible components (see cyc#CompositeTangibleAndIntangibleObject),  such as a printed copy of a newspaper (as its information content is intangible) or a person (as her mental states are intangible).
                 supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
        supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
           supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
              supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
        supertype:  individual__particular___supertype_of_1st_order_types  all individuals (for concepts or relations) are implicitely or explicitely instance of that type
           supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
  supertype:  fundamental_quantity__fundamentalquantity__fundamental_measure__fundamentalmeasure  one of the four quantities that are the basis of systems of measurement
     supertype:  measure__quantity__amount__quantum  how much there is of something that you can measure
        supertype:  attribute_or_quality_or_measure  e.g., mass, mass unit, 1 kg, frequency, [2-3] hz, color, blue, speed, 1 m/s

time_period has many specializing statements. Browse its subtypes, or click here for a search form or here to represent such an object.