Class OldHinduLunarCalendar

java.lang.Object

org.episteme.social.history.calendars.AlternateCalendar

org.episteme.social.history.calendars.SevenDaysWeek

org.episteme.social.history.calendars.MonthDayYear

org.episteme.social.history.calendars.OldHinduSolarCalendar

org.episteme.social.history.calendars.OldHinduLunarCalendar

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ModifiedHinduLunarBRCalendar, ModifiedHinduLunarCalendar

public class OldHinduLunarCalendar
extends OldHinduSolarCalendar

Implementation of the Old Hindu Lunar calendar (Surya Siddhanta). * @version 2.1

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	leap	True if the current month is a leap month (adhika māsa).
protected static final Rational	LUNARDAY	The length of a tithi (lunar day) in days.
protected static final Rational	LUNARMONTH	The length of a synodic month (new moon to new moon) in days.
protected static final String[]	MONTHS	List of Hindu lunar month names.

Fields inherited from class OldHinduSolarCalendar

EPOCH, JOVIANPERIOD, SIDEREALYEAR, SOLARMONTH

Fields inherited from class MonthDayYear

day, month, year

Fields inherited from class SevenDaysWeek

DAY_NAMES, FRIDAY, MONDAY, SATURDAY, SUNDAY, THURSDAY, TUESDAY, WEDNESDAY

Fields inherited from class AlternateCalendar

JD_EPOCH, rd, unicode

Constructor Summary

Constructors

Constructor	Description
OldHinduLunarCalendar()
OldHinduLunarCalendar(int i, boolean flag, int j, int k)
OldHinduLunarCalendar(int i, int j, int k)
OldHinduLunarCalendar(long l)
OldHinduLunarCalendar(AlternateCalendar altcalendar)

Method Summary

Modifier and Type	Method	Description
boolean	getLeap()
Enumeration<String>	getMonths()	Returns an enumeration of all month names for this calendar.
protected String	getSuffix()	Returns the era suffix for display (e.g., "CE", "BCE", "AH").
protected static boolean	isLeapYear(int i)
static void	main(String[] args)
protected String	monthName()	Returns the name of the current month.
protected void	recomputeFromRD()	Recomputes the calendar-specific fields from the current Rata Die.
protected void	recomputeRD()	Recomputes the Rata Die from the calendar-specific fields.
void	set(int i, boolean flag, int j, int k)
void	set(int i, int j, int k)	Sets the calendar to the specified date and recomputes the Rata Die.
void	set(long l)	Sets this calendar to the specified Rata Die and recomputes the calendar fields.

Methods inherited from class OldHinduSolarCalendar

dayCount, jovianYear

Methods inherited from class MonthDayYear

getDay, getMonth, getYear, toString

Methods inherited from class SevenDaysWeek

kDayAfter, kDayBefore, kDayNearest, kDayOnOrAfter, kDayOnOrBefore, nthKDay, weekDay, weekDayName

Methods inherited from class AlternateCalendar

add, amod, difference, difference, floorDiv, fromJD, isAfter, isBefore, mod, mod, subtract, toJD, toJD, toRD

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

MONTHS

protected static final String[] MONTHS

List of Hindu lunar month names.

LUNARMONTH

protected static final Rational LUNARMONTH

The length of a synodic month (new moon to new moon) in days.

LUNARDAY

protected static final Rational LUNARDAY

The length of a tithi (lunar day) in days.

leap

protected boolean leap

True if the current month is a leap month (adhika māsa).

Constructor Details

OldHinduLunarCalendar

public OldHinduLunarCalendar()

OldHinduLunarCalendar

public OldHinduLunarCalendar(long l)

OldHinduLunarCalendar

public OldHinduLunarCalendar(AlternateCalendar altcalendar)

OldHinduLunarCalendar

public OldHinduLunarCalendar(int i,
 int j,
 int k)

OldHinduLunarCalendar

public OldHinduLunarCalendar(int i,
 boolean flag,
 int j,
 int k)

Method Details

isLeapYear

protected static boolean isLeapYear(int i)

recomputeFromRD

protected void recomputeFromRD()

Description copied from class: AlternateCalendar

Recomputes the calendar-specific fields from the current Rata Die. Called after setting the RD value.

Overrides:

recomputeFromRD in class OldHinduSolarCalendar

recomputeRD

protected void recomputeRD()

Description copied from class: AlternateCalendar

Recomputes the Rata Die from the calendar-specific fields. Called after setting individual calendar fields.

Overrides:

recomputeRD in class OldHinduSolarCalendar

set

public void set(int i,
 int j,
 int k)

Description copied from class: MonthDayYear

Sets the calendar to the specified date and recomputes the Rata Die.

Overrides:

set in class OldHinduSolarCalendar

Parameters:

i - the year

j - the month

k - the day of month

set

public void set(int i,
 boolean flag,
 int j,
 int k)

set

public void set(long l)

Description copied from class: AlternateCalendar

Sets this calendar to the specified Rata Die and recomputes the calendar fields.

Overrides:

set in class OldHinduSolarCalendar

Parameters:

l - the new Rata Die value

monthName

protected String monthName()

Description copied from class: MonthDayYear

Returns the name of the current month.

Overrides:

monthName in class OldHinduSolarCalendar

Returns:

the month name

getSuffix

protected String getSuffix()

Description copied from class: MonthDayYear

Returns the era suffix for display (e.g., "CE", "BCE", "AH").

Overrides:

getSuffix in class OldHinduSolarCalendar

Returns:

the suffix string

getMonths

public Enumeration<String> getMonths()

Description copied from class: MonthDayYear

Returns an enumeration of all month names for this calendar.

Overrides:

getMonths in class OldHinduSolarCalendar

Returns:

month names enumeration

getLeap

public boolean getLeap()

main

public static void main(String[] args)