Hi Alana, thanks for posting this comment many years ago.

We've changed Hebcal to match how Google's Holidays in Israel calendar displays the holiday.

https://www.hebcal.com/holidays/yom-haaliyah-school-observance-2021

Yom HaAliyah School Observance (Aliyah Day observed in Israeli schools) for Hebrew Year 5782 occurs at dawn on Wednesday, 13 October 2021.

https://www.hebcal.com/holidays/yom-haaliyah-2022

Yom HaAliyah (Recognizes Aliyah, immigration to the Jewish State of Israel) for Hebrew Year 5782 begins at sundown on Sunday, 10 April 2022 and ends at nightfall on Monday, 11 April 2022.

Hi, thanks for using Hebcal Shabbat API.

Yes, you can optionally specify an exact date, for example 13 February 2021.

• gy=2021&gm=2&gd=13

For example:

https://www.hebcal.com/shabbat?cfg=json&geonameid=3448439&M=on&gy=2021&gm=2&gd=13

Thanks for using Hebcal and thanks for the feedback! We recently added some links to tikkun.io from our parsha pages.

Hi, we recommend https://www.webcal.guru/en-US/today for sunrise and sunset times in Google Calendar

Hi, we're very sorry. 

Now defunct: previously there was a macOS Hebcal Dashboard Widget by Mark Saper, but it’s no longer being maintained.

Apple no longer supports Dashboard widgets either.

Rabbi Nathan Bushwick’s Understanding the Jewish Calendar explains some of the mathematical and scientific underpinnings of the calendar.

Hi, thanks for using Hebcal and thanks for your patience! 

As you have noticed, calendars exported from Hebcal to Apple or Google Calendar or other services that support iCalendar subscription feeds are typically “perpetual”. That is, they contain events for the current year (Gregorian or Hebrew) plus some number of years into the future. Our calendars typically have 5 years of events (current year plus 4 years into the future).

Subscription feeds are the recommended approach because they are easier to manage (with different alarm options, etc) and because Jewish calendar events can be displayed in a different color. 

If you'd like to capture historical holidays from Hebcal and merge them into your personal calendar, this can indeed be done with a little bit of additional export/import effort.

You can visit our https://www.hebcal.com/hebcal page and enter a past year (for example 2015) in the form and then click on the Create Calendar button.

On the calendar results page, click the Download button and note the "Alternate option" text at the very bottom of the Download dialog box.

Alternate option: Download hebcal_2015.ics and then import manually into Apple macOS Calendar.app.

If you click on this link, it will download a file (not a subscription feed) with exactly one year of events, which you can then import into your preferred calendar application.

You can find past dates for Passover here

https://www.hebcal.com/holidays/pesach-2001#dates

You may receive a 429 “Too Many Requests” error if your client makes more than 90 requests in a 10-second window. Remember, this is a free service; please be polite and send batch API requests slowly over a longer period of time.

Documented here:

https://www.hebcal.com/home/1498/hebcal-developer-api-minor-updates

Hi Saul, thanks for being a long time Hebcal user and reporting this bug many years ago. 

We were finally able to reproduce this error on Outlook 365 web. We made two changes to our iCalendar feeds to fix the problem for you:

1. Our .ics feeds so they include X-MICROSOFT-CDO-ALLDAYEVENT:TRUE which according to some Microsoft documentation might fix the problem.

2. Our VTIMEZONE implementation for Asia/Jerusalem (the timezone that is used throughout Israel) has been modified so it only uses a simpler, current Daylight Saving Time rules (which clocks are advanced by one hour, beginning on the Friday before the last Sunday of March, and ending on the last Sunday of October). This is perfectly accurate for any calendars 2013 and later (when the Israeli government standardized and simplified DST rules).

Shana Tova!