java.lang.Object
- org.joda.time.Chronology
- - org.joda.time.chrono.BaseChronology
  - - uk.ac.rdg.resc.edal.time.FixedYearVariableMonthChronology

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AllLeapChronology, NoLeapChronology
```
public class FixedYearVariableMonthChronology
extends org.joda.time.chrono.BaseChronology
```
A Chronology in which each year has the same number of days but the lengths of the months may be different. May be useful for climate and palaeoclimate calendars.

In this Chronology, a millisecond instant of zero corresponds with 1970-01-01T00:00:00.000Z and a year has a fixed number of milliseconds.

There is no concept of an era in this calendar, so all durations and fields relating to this concept are not supported. Additionally, the concept of a "weekyear" (the year that "owns" a given week) is not implemented.

Instances of this class can only be created in {@link "DateTimeZone#UTC"}. (Support for time zones makes little sense in this chronology).

Instances of this class are immutable.

See Also:

"http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.4/cf-conventions.html#calendar", Serialized Form

Constructor Summary

Constructors
Constructor Description

FixedYearVariableMonthChronology(int[] monthLengths)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`org.joda.time.DurationField`	`centuries()`
`org.joda.time.DateTimeField`	`clockhourOfDay()`
`org.joda.time.DateTimeField`	`clockhourOfHalfday()`
`org.joda.time.DateTimeField`	`dayOfMonth()`
`org.joda.time.DateTimeField`	`dayOfWeek()`
`org.joda.time.DateTimeField`	`dayOfYear()`
`org.joda.time.DurationField`	`days()`	Each day has exactly the same length: there is no daylight saving
`long`	`getAverageMillisInMonth()`	Gets the average number of milliseconds in each month
`int[]`	`getMonthLengths()`	Gets the length of each month in days.
`org.joda.time.DateTimeZone`	`getZone()`	Always returns UTC
`org.joda.time.DateTimeField`	`halfdayOfDay()`
`org.joda.time.DurationField`	`halfdays()`
`org.joda.time.DateTimeField`	`hourOfDay()`
`org.joda.time.DateTimeField`	`hourOfHalfday()`
`org.joda.time.DurationField`	`hours()`
`org.joda.time.DurationField`	`millis()`
`org.joda.time.DateTimeField`	`millisOfDay()`
`org.joda.time.DateTimeField`	`millisOfSecond()`
`org.joda.time.DateTimeField`	`minuteOfDay()`
`org.joda.time.DateTimeField`	`minuteOfHour()`
`org.joda.time.DurationField`	`minutes()`
`org.joda.time.DateTimeField`	`monthOfYear()`
`org.joda.time.DurationField`	`months()`
`org.joda.time.DateTimeField`	`secondOfDay()`
`org.joda.time.DateTimeField`	`secondOfMinute()`
`org.joda.time.DurationField`	`seconds()`
`String`	`toString()`
`org.joda.time.DurationField`	`weeks()`	Each week has 7 days
`org.joda.time.Chronology`	`withUTC()`	Returns this object
`org.joda.time.Chronology`	`withZone(org.joda.time.DateTimeZone zone)`	Throws UnsupportedOperationException unless the time zone is UTC
`org.joda.time.DateTimeField`	`year()`
`org.joda.time.DateTimeField`	`yearOfCentury()`
`org.joda.time.DurationField`	`years()`

Methods inherited from class org.joda.time.chrono.BaseChronology
add, add, centuryOfEra, era, eras, get, get, get, getDateTimeMillis, getDateTimeMillis, getDateTimeMillis, set, validate, weekOfWeekyear, weekyear, weekyearOfCentury, weekyears, yearOfEra

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FixedYearVariableMonthChronology
```
public FixedYearVariableMonthChronology(int[] monthLengths)
```
    Parameters:
    
    monthLengths - The number of days in each month
    
    Throws:
    
    NullPointerException - if monthLengths is null
    
    IllegalArgumentException - if monthLengths is empty or contains zero or negative values.
- Method Detail
  - dayOfMonth
```
public final org.joda.time.DateTimeField dayOfMonth()
```
  - monthOfYear
```
public final org.joda.time.DateTimeField monthOfYear()
```
  - months
```
public final org.joda.time.DurationField months()
```
  - getMonthLengths
```
public int[] getMonthLengths()
```
    Gets the length of each month in days. Returns a new array with each invocation to maintain integrity of internal data. TODO return an immutable List
  - getAverageMillisInMonth
```
public long getAverageMillisInMonth()
```
    Gets the average number of milliseconds in each month
  - toString
```
public String toString()
```
    Specified by:
    
    toString in class org.joda.time.chrono.BaseChronology
  - millis
```
public final org.joda.time.DurationField millis()
```
    Overrides:
    
    millis in class org.joda.time.chrono.BaseChronology
  - seconds
```
public final org.joda.time.DurationField seconds()
```
    Overrides:
    
    seconds in class org.joda.time.chrono.BaseChronology
  - minutes
```
public final org.joda.time.DurationField minutes()
```
    Overrides:
    
    minutes in class org.joda.time.chrono.BaseChronology
  - hours
```
public final org.joda.time.DurationField hours()
```
    Overrides:
    
    hours in class org.joda.time.chrono.BaseChronology
  - halfdays
```
public final org.joda.time.DurationField halfdays()
```
    Overrides:
    
    halfdays in class org.joda.time.chrono.BaseChronology
  - days
```
public final org.joda.time.DurationField days()
```
    Each day has exactly the same length: there is no daylight saving
    
    Overrides:
    
    days in class org.joda.time.chrono.BaseChronology
  - weeks
```
public final org.joda.time.DurationField weeks()
```
    Each week has 7 days
    
    Overrides:
    
    weeks in class org.joda.time.chrono.BaseChronology
  - years
```
public final org.joda.time.DurationField years()
```
    Overrides:
    
    years in class org.joda.time.chrono.BaseChronology
  - centuries
```
public final org.joda.time.DurationField centuries()
```
    Overrides:
    
    centuries in class org.joda.time.chrono.BaseChronology
  - millisOfSecond
```
public final org.joda.time.DateTimeField millisOfSecond()
```
    Overrides:
    
    millisOfSecond in class org.joda.time.chrono.BaseChronology
  - millisOfDay
```
public final org.joda.time.DateTimeField millisOfDay()
```
    Overrides:
    
    millisOfDay in class org.joda.time.chrono.BaseChronology
  - secondOfMinute
```
public final org.joda.time.DateTimeField secondOfMinute()
```
    Overrides:
    
    secondOfMinute in class org.joda.time.chrono.BaseChronology
  - secondOfDay
```
public final org.joda.time.DateTimeField secondOfDay()
```
    Overrides:
    
    secondOfDay in class org.joda.time.chrono.BaseChronology
  - minuteOfHour
```
public final org.joda.time.DateTimeField minuteOfHour()
```
    Overrides:
    
    minuteOfHour in class org.joda.time.chrono.BaseChronology
  - minuteOfDay
```
public final org.joda.time.DateTimeField minuteOfDay()
```
    Overrides:
    
    minuteOfDay in class org.joda.time.chrono.BaseChronology
  - hourOfDay
```
public final org.joda.time.DateTimeField hourOfDay()
```
    Overrides:
    
    hourOfDay in class org.joda.time.chrono.BaseChronology
  - hourOfHalfday
```
public final org.joda.time.DateTimeField hourOfHalfday()
```
    Overrides:
    
    hourOfHalfday in class org.joda.time.chrono.BaseChronology
  - halfdayOfDay
```
public final org.joda.time.DateTimeField halfdayOfDay()
```
    Overrides:
    
    halfdayOfDay in class org.joda.time.chrono.BaseChronology
  - clockhourOfDay
```
public final org.joda.time.DateTimeField clockhourOfDay()
```
    Overrides:
    
    clockhourOfDay in class org.joda.time.chrono.BaseChronology
  - clockhourOfHalfday
```
public final org.joda.time.DateTimeField clockhourOfHalfday()
```
    Overrides:
    
    clockhourOfHalfday in class org.joda.time.chrono.BaseChronology
  - dayOfWeek
```
public final org.joda.time.DateTimeField dayOfWeek()
```
    Overrides:
    
    dayOfWeek in class org.joda.time.chrono.BaseChronology
  - dayOfYear
```
public final org.joda.time.DateTimeField dayOfYear()
```
    Overrides:
    
    dayOfYear in class org.joda.time.chrono.BaseChronology
  - year
```
public final org.joda.time.DateTimeField year()
```
    Overrides:
    
    year in class org.joda.time.chrono.BaseChronology
  - yearOfCentury
```
public final org.joda.time.DateTimeField yearOfCentury()
```
    Overrides:
    
    yearOfCentury in class org.joda.time.chrono.BaseChronology
  - getZone
```
public final org.joda.time.DateTimeZone getZone()
```
    Always returns UTC
    
    Specified by:
    
    getZone in class org.joda.time.chrono.BaseChronology
  - withZone
```
public final org.joda.time.Chronology withZone(org.joda.time.DateTimeZone zone)
```
    Throws UnsupportedOperationException unless the time zone is UTC
    
    Specified by:
    
    withZone in class org.joda.time.chrono.BaseChronology
  - withUTC
```
public final org.joda.time.Chronology withUTC()
```
    Returns this object
    
    Specified by:
    
    withUTC in class org.joda.time.chrono.BaseChronology

Class FixedYearVariableMonthChronology

Constructor Summary

Method Summary

Methods inherited from class org.joda.time.chrono.BaseChronology

Methods inherited from class java.lang.Object

Constructor Detail

FixedYearVariableMonthChronology

Method Detail

dayOfMonth

monthOfYear

months

getMonthLengths

getAverageMillisInMonth

toString

millis

seconds

minutes

hours

halfdays

days

weeks

years

centuries

millisOfSecond

millisOfDay

secondOfMinute

secondOfDay

minuteOfHour

minuteOfDay

hourOfDay

hourOfHalfday

halfdayOfDay

clockhourOfDay

clockhourOfHalfday

dayOfWeek

dayOfYear

year

yearOfCentury

getZone

withZone

withUTC