Package com.kosherjava.zmanim.hebrewcalendar

package com.kosherjava.zmanim.hebrewcalendar

This package contain classes that represent a Jewish Date/Calendar, and allows conversion between Jewish and Gregorian dates. The main calendar classes JewishCalendar and JewishDate are based on Avrom Finkelstien's code, refactored to fit the Zmanim API. The parsha and season-based tefila change code was ported by Y. Paritcher from his libzmanim code.

Design:

• JewishDate is the base class, allowing the maintainance of an instance of a Gregorian date along with the corresponding Jewish date.
• JewishCalendar extends JewishDate and adds some methods related to the calendar.
• TefilaRules is a utility class for various calendar based tefila rules.
• HebrewDateFormatter defines the basics for taking a JewishCalendar and formatting the dates.
• YomiCalculator calculates the Daf Yomi Bavli for a given JewishCalendar and YerushalmiYomiCalculator does the same for Yerushalmi Yomi.

Author:

© Eliyahu Hershfeld 2011 - 2025

Related Packages

Package	Description
com.kosherjava.zmanim	The KosherJava Zmanim library is an API for a specialized calendar that can calculate different astronomical times including sunrise and sunset and Jewish zmanim or religious times for prayers and other Jewish religious duties.
com.kosherjava.zmanim.util	Utility classes for the Zmanim API including classes to calculate sun based times, location information, some formatting and geographic location utilities.

Class	Description
Daf	An Object representing a daf (page) in the Daf Yomi cycle.
HebrewDateFormatter	The HebrewDateFormatter class formats a JewishDate.
JewishCalendar	The JewishCalendar extends the JewishDate class and adds calendar methods.
JewishCalendar.Parsha	List of parshiyos or special Shabasos.
JewishDate	The JewishDate is the base calendar class, that supports maintenance of a GregorianCalendar instance along with the corresponding Jewish date.
TefilaRules	Tefila Rules is a utility class that covers the various halachos and minhagim regarding changes to daily tefila / prayers, based on the Jewish calendar.
YerushalmiYomiCalculator	This class calculates the Talmud Yerusalmi Daf Yomi page (Daf) for the a given date.
YomiCalculator	This class calculates the Daf Yomi Bavli page (daf) for a given date.