KosherJava

Question:Why does the output of zmanim for a different time zone appear incorrect?Answer: One of the common issues encountered by developers using the API is that zmanim generated for a different time zone than the user’s time zone may return output that appears incorrect. For example a user in Lakewood, NJ trying to calculate sunrise [...]

The Bearing to Yerushalayim and Zmanim Map was recently updated to version 3.0. This new release adds a number of new features to the Zmanim Map version 2.0 update released in March 2010. The main change was updating the Google Map API version from the deprecated v2 to v3. This change increases performance and adds [...]

Moshe Berman completed the 2.0 release of his port of the KosherJava Zmanim API from Java to a Cocoa API using Objective-C. You can see the work in the KosherCocoa project page. The original work on the port dates back to Moshe’s iPhone Ultimate Omer 2 (iTunes link) app. In that app, he ported the [...]

Calculating the earliest and latest times for Kiddush Levana has not been part of the KosherJava Zmanim API until now. This is because unlike other zmanim that solely rely on solar calculations that are tied to the Gregorian calendar, times for Kiddush Levanah depend on the Jewish calendar molad (lunar conjunction) computation. With the recent [...]

Until this point the KosherJava Zmanim API has been released under the GPL V2.0 open source license. This had the effect of forcing any application written using the library to release it’s source code under the same license. Being that the Zmanim API is a library, the LGPL is a more appropriate license. The LGPL [...]

The Zmanim API did not have dedicated zmanim to claculate the Erev Pesach zmanim of sof zman achilas chametz (the latest time one can eat chametz), and sof zman biur chametz (the latest time to burn chametz) till the April 14 check in to the KosherJava Zmanim Project SVN repository. The latest time for eating [...]

Thanks to Jay Gindin, the Zmanim API source code is now in a publicly available SVN server. The Google Code project can be found at code.google.com/p/kosherjava. This will have a number of benefits to the project. It will more easily allow users to find the code, ensure that they have the latest code, track changes, [...]

Question:How do I get the Jewish Date for … using the Zmanim API? Answer:The current version of the Zanim API does not support Jewish calendrical calculations. Zmanim are almost exclusively based on the solar calendar, so for example, the sunrise on February 8th this year in Montreal (or any other date and location), will be [...]

Mike who took over development of the WordPress Hebrew Date plugin in 2006, released a new version of the plugin. The WordPress Hebrew Date plugin is now hosted at the WordPress plugin repository. This should make it easier for people to find and update the plugin. New in this version is support for the WordPress [...]

Question:Why do Some Zmanim Never Occur in Some Locations? (Developers Beware) Answer:While most people realize that the sun may not rise or set in the Arctic and Antarctic Circles (see the Star-K’s When Does One Pray When There Is No Day), many are not aware that some twilight dips will not occur during part of [...]