# Package groovy.time

- Class Summary
  Class | Description
  --- | ---
  BaseDuration | Base class for date and time durations.
  BaseDuration.From |
  DatumDependentDuration | DatumDependentDuration represents durations whose length in milliseconds cannot be determined without knowing the datum point.
  Duration | Duration represents time periods which have values independent of the context.
  TimeCategory | Apply a number of methods to allow convenient Date/Time manipulation,such as:
  TimeDatumDependentDuration | TimeDatumDuration represents a time period which results from an arithmetic operation between a TimeDuration object and a DatumDuration object
  TimeDuration | TimeDuration represents time periods expressed in units of hours, minutes, seconds and milliseconds.