Hi, thanks for using the Hebcal APIs

The basic URL format is as follows:

https://www.hebcal.com/shabbat?cfg=json&geonameid=3448439&M=on

You must specify a location for candle-lighting times:

• geo=geoname – location specified by GeoNames.org numeric ID
  • requires additional parameter geonameid=3448439
  • Hebcal.com supports over 100,000 different GeoNames IDs. These are world cities with a population of 1,000 or more. See cities1000.zip from https://download.geonames.org/export

If you pick the correct geonameid for a city in our database, you don't need to specify the tzid.

You will find good documentation and examples at 

https://www.hebcal.com/home/197/shabbat-times-rest-api

Please post a link to your code (github repo, codepen, jsfiddle, etc). We can't help much without more details.

The latest release of @hebcal/core is now 5.8.3 - there have been many changes in the past 8 months. You also might try simply refreshing your dependencies.

When specifying years of the Hebrew calendar in the present millennium, we omit the thousands (which is presently 5, ה). For example, the Hebrew year 5782 is written as 782 (תשפ״ב) rather than 5782 (ה׳תשפ״ב).

You can read more here:

https://www.hebcal.com/home/1824/numerical-values-of-hebrew-letters

Looks like ט׳ שבט תרצ״ג which is the 9th of Sh'vat, 5693

https://www.hebcal.com/converter?hd=9&hm=Shvat&hy=5693&h2g=1

We have added an optional Yizkor checkbox to the custom calendar page at https://www.hebcal.com/hebcal

We have also added a dedicated Yizkor calendar to this page https://www.hebcal.com/ical/

We've added a dedicated Yizkor calendar to this page https://www.hebcal.com/ical/

Hi, thanks for contacting Hebcal.

Tu B’Av for Hebrew Year 5785 begins at sundown on Friday, 8 August 2025 and ends at nightfall on Saturday, 9 August 2025. 

https://www.hebcal.com/holidays/tu-bav-2025

Tu B’Av (Hebrew: ט״ו באב, the fifteenth of the month Av) is a minor Jewish holiday. In modern-day Israel, it is celebrated as a holiday of love (חג האהבה Ḥag HaAhava).

Are you seeing a different date published somewhere?

thank you so much for your patience. The problem should be fixed now. You can find it by searching for Hebcal in the Apple App Store, or you can directly get it via this link.

https://apps.apple.com/us/app/hebcal-hebrew-calendar/id1582733315

thank you so much for using Hebcal and thanks for contacting us. We can confirm the same problem and we are working to resolve the issue. We expect the watch app will be back in the Apple Watch app store within 24 to 48 hours.

https://www.hebcal.com/converter?gd=24&gm=10&gy=1955&g2h=1