Hi, thanks for using Hebcal, and thanks for your message.

We're not quite sure what you mean the "entre and exit of Sabbath are the same".

If you use the Hebcal iCalendar feeds and you specify a location for candle-lighting times, you will see an event called "Candle lighting" on Friday night to indicate the beginning of Shabbat and an event called "Havdalah" on Saturday night to indicate the conclusion of Shabbat. These events are typically approximately 25 hours apart, so they are not at the same time. 

You may notice that the aforementioned "Candle lighting" and "Havdalah" calendar events have 0-minute duration. For example, if the start time is at 17:49pm the the end time of that event is also at 17:49pm. Unlike a calendar appointment which might have a 30- or 60-minute duration (which would indicate a range of times), these events deliberately have a 0-minute duration to indicate a moment in time. They are designed to serve as a reminder.

Does this answer your question?

We've done a bit of research here and we aren't clear if there is a standard learning schedule here.

ArtScroll publishes two completely different cycles. There's a 128-day cycle in their Chofetz Chaim: A Daily Companion (Day 1: The Source of Exile, Day 2: Irrefutable Proof, Day 127: Financial Commitments, Day 128:  In Closing).

There's an alternate 178-day cycle in ArtScroll's Chofetz Chaim: A Lesson A Day.

Are there other sources of this learning cycle beyond these two offered by ArtScroll? Which do you study?

It's also not yet clear how to link either of these cycles to Sefaria, but of course we agree that any published calendar should ideally link directly to the sources on Sefaria.

Thanks for the feedback and the suggestion! We'll look into the Chofetz Chaim calendar cycle details and will get back to you about the feasibility and timeline.

Hi, thanks for using Hebcal.

If you have questions about Hebrew to Gregorian date conversion, we'd encourage you to use our Hebrew Date Converter page. It's very easy to convert in both directions, and we'd encourage you to experiment with the date conversions so you can get comfortable understanding when the Hebrew date changes.

For example,

Tue, 18 April 2023 after sunset = 28th of Nisan, 5783

https://www.hebcal.com/converter?gd=18&gm=4&gy=2023&gs=on&g2h=1

28th of Nisan, 5783 = Wed, 19 April 2023

https://www.hebcal.com/converter?hd=28&hm=Nisan&hy=5783&h2g=1

Wed, 19 April 2023 = 28th of Nisan, 5783

https://www.hebcal.com/converter?gd=12&gm=3&gy=2023&g2h=1

We hope this helps!

Thanks for using Hebcal and thanks for this excellent product suggestion!

Happy Purim!

Hi, thanks for using the Hebcal Apple Watch app.

We've seen this issue before, and it's a problem because our watch app doesn't have a companion iPhone app. This is a new feature that Apple introduced recently and there are still some bugs with how the user experience works. The long-term fix for us will be to release an iPhone companion app.

In the short term, however, the best workaround we can recommend is to go to the App Store on the watch itself and search for (and install) Hebcal. By installing the app directly on the watch, it seems to work around this error.

We hope this helps!

Hi, thanks for contacting Hebcal. You can create a personal list of Yahrzeit (memorial) and Yizkor dates, Hebrew Birthdays and Anniversaries for 20+ years at this page:

https://www.hebcal.com/yahrzeit

If you know the Hebrew but not the Gregorian date, you can use the Hebrew Date Converter to get the Gregorian date of death, and then come back to the Yahrzeit + Anniversary calendar page.

If you don't know the Hebrew year, it may be difficult to get a correct date conversion. You could try to estimate it, but you might end up with an incorrect result. The rules for calculating birthdays and yahrzeits are a bit complicated and depend on the actual attributes of the Hebrew year they occurred in -- was it a leap year (Adar vs. Adar I vs. Adar II)? Short Kislev? Long Cheshvan? For more details, you can read the article How does Hebcal determine anniversaries (birthdays, yahrzeits) in Adar, Cheshvan, or Kislev?

Fantastic! Glad to hear that the dayCellDidMount hook was the right solution.

Hi, thanks for contacting us.

This sounds like a FullCalendar configuration option. You may have to do some complicated JavaScript engineering to make that happen. Try using the FullCalendar dayCellContent render hook and see if that works?

https://fullcalendar.io/docs/day-cell-render-hooks

Let us know if that works for you?

We're sorry we can't offer more support here -- Hebcal isn't affiliated with the FullCalendar project. You can contact the FullCalendar folks for additional help.

Hi, thanks for using the Hebcal Yahrzeit, Hebrew Birthdays, and Hebrew Anniversaries tool.

Here are instructions from Google Calendar on how to rename a calendar.

https://support.google.com/calendar/answer/37095?hl=en

Edit your calendar's name

1. Open Google Calendar .
2. On the left side of the page, under "My calendars," or "Other calendars," find your calendar.
3. Next to your calendar, click Options Settings and sharing.
4. In the box at the top, choose a new name.