
Shavuot wrong dates
Hi,
First of all, thank you for this great API/data!
Second, I saw that there is Shavuot I (17.05.2021) and Shavuot II (18.05.2021) in the API as I'm a jew and living in Israel I don't know anything about these two, Shavuot is a two days holiday, there is only Shavuot Eve (Erev Shavuot 16.05.2021) and Shavuot (17.05.2021).
here is a picture from google to confirm it:

Hi, thanks for using Hebcal.
For Israel this is the URL we publish which shows only one day for Shavuot
https://www.hebcal.com/holidays/shavuot?i=on
Which says: Shavuot (Festival of Weeks) for Hebrew Year 5782 begins in 🇮🇱 at sundown on Saturday, 4 June 2022 and ends at nightfall on Sunday, 5 June 2022.
And for Diaspora (chutz l'aretz) we publish this page
https://www.hebcal.com/holidays/shavuot
Which says: Shavuot (Festival of Weeks) for Hebrew Year 5782 begins in the Diaspora at sundown on Saturday, 4 June 2022 and ends at nightfall on Monday, 6 June 2022.
I hope this extra location information helps.

Hebrew Date Converter REST API not showing Omer
I'm using the Converter REST API.
According to the documentation (here, near the bottom of the page) this should return the day of the Omer.
However when I try it (https://www.hebcal.com/converter?cfg=json&gy=2021&gm=4&gd=5&g2h=1) then no Omer event is returned in the Events section.
Am I missing something?

Yahrzeit dates from Jewish calendar REST API
Is there a way to get Yahrzeit dates from Jewish calendar REST API
I need to get next anniversary dates by looking at date of death a person.
I tried to find the solution on Hebcal site, they are provided a REST API for calendar, and UI to calculate that dates also, but I could not to find REST api method for it
this is the UI,https://www.hebcal.com/yahrzeit
I need that data as JSON from REST API.
If anyone have experience on that please let know me
Thanks

We've released some experimental support for an API here.
Documentation is forthcoming, but the basic idea is that you'll need to POST x-www-form-urlencoded data to https://www.hebcal.com/yahrzeit with the special parameter cfg=json
For example:
curl 'https://www.hebcal.com/yahrzeit' \
-H 'content-type: application/x-www-form-urlencoded' \
--data-raw 'cfg=json&n1=Example1&t1=Birthday&d1=15&m1=4&y1=1983&s1=on&n2=Example2&t2=Yahrzeit&d2=13&m2=11&y2=2008&s2=off&hebdate=on&years=20&v=yahrzeit' \
--compressed

Shabbat Hanukkah maftir - only one prince
The Hanukkah Torah reading for weekdays (per Ashkenazic custom outside of Israel) is two days of the princes bringing offerings from the section of Numbers 7 (e.g., on day 3 of Hanukkah we read of the prince who brought offerings on day 3), plus the prince who brought offerings on day 4). On Shabbat of Hanukkah (when not also Rosh Hodesh) we read the regular Torah reading for 7 aliyot, and the maftir reading is just one prince, corresponding to that day of Hanukkah (e.g., if Shabbat is day 3 we read of the prince from day 3 only). Hebcal.com right now is showing that the Shabbat of Hanukkah this year we read from Numbers 7:18-29, which is two princes:
https://www.hebcal.com/sedrot/vayeshev-20201212
I'm guessing the algorithm is just using the weekday Hanukkah custom to figure out what the Shabbat maftir reading should be, but that seems to be incorrect. For the source of the Hanukkah reading, you can check Shulkhan Aruch OH 684:2 (note 6 in the Mishnah Berurah specifies only one prince in the maftir).

Yom Kippur Katan
With all of the different dates currently included in Hebcal, would it be possible to please also add Yom Kippur Katan?

Update: we've added a Yom Kippur Katan calendar feed to the Hebcal website. You can find it towards the bottom of the Jewish holiday downloads page.
Yom Kippur Katan
יוֹם כִּפּוּר קָטָן is a minor day of atonement occurring monthly on the day preceeding each Rosh Chodesh.
9 calendar events per year. 10-year perpetual feed.
Yom Kippur Katan is omitted in Elul (on the day before Rosh Hashanah), Tishrei (Yom Kippur has just passed), Kislev (due to Chanukah) or Nisan (fasting not permitted during Nisan). When Rosh Chodesh occurs on Shabbat or Sunday, Yom Kippur Katan is observed on the preceding Thursday. [1]
Outlook CSV
iCalendar link:

Complete set of candle lighting times for a chag
I would greatly appreciate your sending a complete set of candle lighting and Havdalah times for a chag BEFORE the chag begins.
I looked up the times for the last 2 days of Pesach at another site during chol hamoed, so I could post them on my kitchen cabinet IN ADVANCE.
I was sent the times via HebCal AFTER the 7th day had already started (east coast USA) which was not helpful.
This type of issue has happened before, and is very frustrating and disappointing. I appreciate the HebCal email service, but it’s disturbing that the info is incomplete. It also leads me to wonder if the info is reliable, since this type of problem is easily preventable by better planning.

Hi, thanks for using Hebcal. We're sorry to hear that our weekly email updates didn't arrive in a timely fashion last year. We've made some changes recently to ensure that doesn't happen again.
We'd also like to encourage you to take a look at our Candle-lighting Times Year at a Glance tool. You can fill out a form to get Shabbat and holiday candle lighting times and Parashat haShavuah (weekly Torah Portion) for the entire year on a single page. You can print it out and post it on your refrigerator.
Shana Tova!

Alexa luach on Echo Show devices on shabbat?
Have you considered/investigated adding to the skill that when you mute the Echo Show for Shabbat the Show will display cards with the localized zmanim for that day?

HEBCAL program from Windows xp to Windows 10
Hello!
I have just purchased a new laptop with Windows 10 and cannot transfer my personal data to the new laptop.
Can you help me?

Hi, thanks for using Hebcal!
Follow these instructions to add a Hebcal Jewish holiday calendar 5-year feed to Outlook.com (also called outlook.live.com Calendar). This technique will also work with Windows 10 devices (desktops, laptops, tablets and phones) that have a built-in calendar application that connects to Outlook.com or MSN.

Alexa, what time is Shabbat in Israel
I really love that I can ask Alexa what time shabbos is but if your data set is based on zip codes only, I get times for California instead of ISRAEL! Please please update this skill to accommodate international use!!
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