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Convert between Gregorian and Hebrew (Jewish) calendar dates.

List Jewish calendar events for a date range: holidays (major, minor, modern Israeli), Rosh Chodesh, fast days, special Shabbatot, weekly parsha, Omer count, molad, Yizkor, Yom Kippur Katan, daily-learning cycles (Daf Yomi, Mishna Yomi, Nach Yomi, Tanakh Yomi, Yerushalmi, Rambam, Chofetz Chaim), and — when a location is given — candle-lighting, havdalah and fast start/end times.

Candle-lighting and havdalah times for the coming (or a specified) Shabbat and any Yom Tov that week, plus the parsha and holiday Torah readings, for a location.

Halachic times of day for a location and date (or date range, max ~7 days recommended): alot hashachar, misheyakir, sunrise (netz), latest Shema and Tefilla (GRA and Magen Avraham), chatzot, mincha gedola/ketana, plag hamincha, sunset (shkia), bein hashmashot, tzeit hakochavim (several opinions), and midnight.

Torah and Haftarah readings for a date or date range: parsha or holiday name, each aliyah with verse ranges and counts, maftir, haftarah, and special readings.

Compute upcoming Gregorian dates for yahrzeits, Hebrew birthdays or Hebrew anniversaries from the original Gregorian date.

Search for a city/place by name and get place ids, country and region.

Fetch any text from the Jewish library by reference, in Hebrew/Aramaic and/or translation, aligned segment by segment.

Fetch many short references in one call (e.

Autocomplete and identify a book title, reference, author, topic or person from partial, misspelled, transliterated or Hebrew input ("bava metzia", "bereishis", "ברכות ב", "Rambam").

Validate and normalize a text reference: canonical English and Hebrew forms, the book it belongs to, its structure, and previous/next sections.

Scan free text (a dvar Torah, article, shiur notes) and detect every citation of a Jewish source in it (e.

Check the status/result of a background task (e.

Full-text search across the entire Jewish library (texts), or across user-made source sheets.

Get commentaries and other sources connected to a passage.

Overview of everything connected to a passage: counts of linked sources by category and book, related topics, source sheets that use it, manuscript images, and related web articles.

List every available edition and translation of a book (language, version title, license, source).

Without a language: list every language code that has translations in the library.

Images of manuscripts and early printed editions (e.

Get a random passage, optionally limited to specific books or categories (e.

Given one or more segment references (e.

Generate a shareable image (PNG) of a short passage, sized for a social platform.

Browse the library's table of contents by category.

Search the list of all books in the library by (part of) an English or Hebrew title, optionally within a category path.

Metadata for a book: author(s), era, composition date and place, description, categories, alternative titles, section structure (e.

Full, unabridged index record for a book (complete schema tree, match templates, alternate structures).

List the books written by an author.

Statistics: - kind "word_count": number of words in a specific version of a book (needs title, version_title, language he/en).

Look up a named term (parsha names, section names, holidays, etc.

Look up a Hebrew or Aramaic word in classic dictionaries (Jastrow, BDB, Klein, and others).

Autocomplete a partial Hebrew/Aramaic word against a dictionary ("Jastrow Dictionary", "Klein Dictionary", "BDB Augmented Strong").

Today's (or any date's) study schedule items with exact references: Parashat HaShavua, Haftarah, Daf Yomi, 929, Daily Mishnah, Daily Rambam (1 and 3 chapters), Daf a Week, Halakhah Yomit, Arukh HaShulchan Yomi, Tanakh Yomi, Chok LeYisrael, Tanya Yomi, Yerushalmi Yomi, and more.

Details for a weekly Torah portion by name (e.

Get a curated topic — a person (e.

List topics, optionally filtered by a word in the title.

Get the network of topics connected to a topic (e.

Recommend topics relevant to one or more passages (e.

Get a random source together with the topic it illustrates — handy for a daily inspiration or quiz.

Get the curated topic for the current parsha (kind "parasha") or the current/upcoming holiday (kind "holiday"), with description and key sources.

Get a user-made source sheet by id: title, author, tags, and each source (reference + text) and commentary block in order.

List public source sheets: - by passage (ref): sheets that use a given text; - by user (user_id): a user's sheets, sortable by "views" or "date", with paging; - latest: newest public sheets (no ref/user_id).

Source-sheet tags: "trending" (this week's trending tags), "all" (every tag, sorted by count or alphabetically), or a specific user's tags.

Check whether a source sheet has been modified since a timestamp (ISO date/time).

Browse collections of source sheets: pass slug for one collection (with its sheets), user_id for a user's collections, or neither to list public collections (filterable by name).

Public profile of a library user/author of source sheets, by profile slug (e.

One-call daily briefing: today's Hebrew date, holidays/events, the weekly parsha, and every daily learning schedule (Daf Yomi, Rambam, Mishnah, 929, Halakhah Yomit, Tanya, etc.

Everything to study the weekly Torah portion: the reading (for a date, or by parsha name), aliyot and haftarah, the text of a chosen aliyah (Hebrew + English), a commentator's notes on its opening verses, and the parsha's topic and themes.

For the next (or a named) Jewish holiday: its dates, a description, the Torah/Haftarah readings, and key classical sources with text.

A ready-to-read Friday summary for a location: candle-lighting and havdalah times, the parsha with aliyot and haftarah, the opening verse of the parsha in Hebrew and English, and any holiday that week.