No, sfirat haomer is NOT changed by the tzeit time. The Shabbat Times API results will change once per WEEK, not once per DAY, every Sunday at midnight in the city’s local time zone

If you need the omer for today, you will need to first fetch the time of tzeit (and there are multiple options) for Tel Aviv using the Zmanim API and then you should compare that with the local time in Tel Aviv. Then, construct second URL for the Jewish calendar REST API (not the Shabbat Times API) and fetch the omer data for today.

Here's a vibe-coded version in JavaScript that you can see for yourself

https://gist.github.com/mjradwin/b33fbd222ab9bbe84d7eff81295fdc4a

Thanks for your question. We don't offer a dedicated parsha widget, but you can do something like this using our API

https://gist.github.com/mjradwin/8a89a1fc54fbc65651639ab0a8f82973

Thanks for the feedback; this short description comes directly from Wikipedia and was out of sync with the current Wikipedia page. It has been updated to the latest version of Wikipedia:

Yom HaZikaron laShoah ve-laG’vurah (Hebrew: יום הזיכרון לשואה ולגבורה, lit. ’Holocaust and Heroism Remembrance Day’), known colloquially in Israel and abroad as Yom HaShoah (Hebrew: יום השואה, Yiddish: יום השואה) and in English as Holocaust Remembrance Day, or Holocaust Day, is Israel’s day of commemoration for the approximately six million Jews murdered in the Holocaust by Nazi Germany and its allies, and for the Jewish resistance in that period. In Israel, it is a national Memorial day, but several Jewish communities around the world observe the day as well. The first official commemorations took place in 1951, and the observance of the day was anchored in a law passed by the Knesset in 1959. It is held on the 27th of Nisan (which falls in April or May), unless the 27th would be adjacent to the Jewish Sabbath, in which case the date is shifted by a day.

Hi, we haven't been able to add this yet, but we did want to tell you that we added Dirshu Amud Yomi calendar

https://www.hebcal.com/ical/

If you're using our Shabbat Times REST API the documentation says: "This API generates results for a given location on a rolling weekly time window. Weekly calculations change every Sunday at midnight in the city’s local time zone."

If your system is in Israel and you are requesting candle lighting times for a city in Israel, it will be synchronized to the timezone Asia/Jerusalem. If your system is in Israel and you were requesting candle lighting times for Paris, France, then it would be synchronized to timezone Europe/Paris.

The Shabbat Times API uses a similar URL and response format as our full Jewish calendar REST API, but offers less control over the dates and times. If you find you want more fine-grained control over the date ranges, or what kinds of events are included and which are excluded, we recommend using the full Jewish calendar REST API instead.

Hi Moish,

Thank you for reaching out!

Unfortunately, we don’t currently offer customization options for the daily limudim calendars — we appreciate the feedback though, and it’s helpful to know what our users are looking for.

Regarding your Nach Yomi schedule being one day off, we’d love to look into that further as it may be a bug on our end. Could you send us a link to the schedule you’re using that shows the one-day difference? That will help us investigate and get to the bottom of it.

Thanks again for taking the time to write in!

We made a little bit of progress on this recently (8b4e93d). We have added several new functions to the Zmanim class to support calculations according to the Baal Hatanya. We haven't added the "Chabad" feature you requested just yet, so this is just a step in the right direction.

alosBaalHatanya: Alot HaShachar (Baal Hatanya)
Dawn. Sun is 16.9° below the horizon in the morning, based on the time of 72 minutes before netz amiti (sunrise) in Jerusalem around the equinox

sofZmanShmaBaalHatanya: Kriat Shema, sof zeman (Baal Hatanya)
Latest Shema (Baal Hatanya). 3 shaos zmaniyos (solar hours) after netz amiti (sunrise), calculated from sunrise to sunset

sofZmanTfilaBaalHatanya: Tefilah, sof zeman (Baal Hatanya)
Latest Shacharit (Baal Hatanya). 4 shaos zmaniyos (solar hours) after netz amiti (sunrise), calculated from sunrise to sunset

minchaGedolaBaalHatanya: Mincha Gedolah (Baal Hatanya)
Earliest Mincha (Baal Hatanya). 6.5 shaos zmaniyos (sea level solar hours) after netz amiti (sunrise), calculated from sunrise to sunset

minchaKetanaBaalHatanya: Mincha Ketanah (Baal Hatanya)
Preferable earliest time to recite Minchah (Baal Hatanya). 9.5 shaos zmaniyos (sea level solar hours) after netz amiti (sunrise), calculated from sunrise to sunset

plagHaminchaBaalHatanya: Plag HaMincha (Baal Hatanya)
Plag HaMincha (Baal Hatanya). 10.75 shaos zmaniyos (solar hours) after netz amiti (sunrise), calculated from sunrise to sunset

tzaisBaalHatanya: Tzeit (Baal Hatanya)
Nightfall (Baal Hatanya). Sun is 6° below the western geometric horizon after sunset

Hi, thank you for your thoughtful question!

This is a fascinating topic in Jewish history, but it's beyond the scope of what Hebcal.com covers — we focus on providing Jewish calendar dates, holiday times, and Torah readings rather than historical analysis.

Here are some great places to dig deeper:

• Wikipedia's "Tisha B'Av" article has a good overview: https://en.wikipedia.org/wiki/Tisha_B%27Av

• TheTorah.com has an excellent scholarly article called "Tisha B'Av: On What Day Were the Jerusalem Temples Destroyed?" that directly addresses your question: https://www.thetorah.com/article/tisha-b-av-on-what-day-were-the-jerusalem-temples-destroyed

• The Talmud itself (Ta'anit 29a) discusses this — you can find it on Sefaria.org

Hope that helps point you in the right direction!

Thank you for your feedback. Chag sameach!

Shimshon’s answer is spot on. The Hebcal link for Parashat Re’eh on August 24, 1968 (https://www.hebcal.com/sedrot/reeh-19680824) has exactly what you need.

To clarify one point that sometimes causes confusion: the choice of Chumash (e.g., ArtScroll Stone Edition vs. others) can affect how the aliyah divisions are marked in certain parshiyot, but it would not affect the haftarah reading. And in the case of Re’eh specifically, this isn’t even an issue — the aliyah breaks are the same across standard Orthodox chumashim.

So you’re all set with that link. Mazal tov on revisiting your bar mitzvah parsha!