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

Thanks for the feedback! We will consider adding this as an optional checkbox on the regular calendar. In the meantime, please use the Yahrzeit calendar and check the "Include Yizkor dates" box.

Hi, thanks for contacting Hebcal.

The @hebcal/hdate JavaScript source code that you are referencing is licensed under the GPL-2.0 license

https://github.com/hebcal/hdate-js?tab=GPL-2.0-1-ov-file#readme

If you are reusing source code to build your functionality, please be sure to note the The GNU General Public License 2.0 requirements. 

The CC BY 4.0 license applies to content generated by web APIs, but not for source code reuse.

Thank you for using Hebcal! To create a personal list of Yahrzeit (memorial) and Yizkor dates for 20+ years, please visit https://www.hebcal.com/yahrzeit

Thank you for using Hebcal! To create a personal list of Yahrzeit (memorial) and Yizkor dates for 20+ years, please visit https://www.hebcal.com/yahrzeit

Thank you for contacting us and for using the  Hebcal Yahrzeit + Anniversary calendar.

We don't have any calendar of famous rabbi yahrzeits posted on Hebcal.com 

If you find such a list, you can use the Comma Separated Values (CSV) file import feature to upload it to Hebcal. Read more at

https://www.hebcal.com/home/4322/csv-import-for-yahrzeit-anniversary-calendar

Thanks for using Hebcal. In short, no, you should not look to Hebcal to give precise calculations for dates before 1752 CE. Hebcal uses the proleptic Gregorian calendar and does not attempt to compensate for dates that differ prior to the Gregorian reformation.

https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar#:~:text=The%20proleptic%20Gregorian%20calendar%20is,its%20official%20introduction%20in%201582.

Hi, thank you for contacting Hebcal.

The easiest way to do this might be to use Microsoft Excel to create a spreadsheet and use this Excel macro to convert from Gregorian dates to Hebrew dates.

https://www.dafaweek.com/HebCal/HebCalVb6.php