On Mon, 28 Jan 2008 20:18:16 -0800, jnf40
wrote:

Ron Rosenfeld,

I found the following code that works up until I enter the Gregorian year
2024 (fiscal year), molad 5784, then it shows Rosh Hashanah beginning sundown
of 9/16/2023 and ending 9/18/2023 with Yom Kippur on 9/25/2023. The calendar
at http://www.jewfaq.org/calendar.htm however shows Rosh Hashanah beginning
sundown of 9/15/2023 and ending 9/17/2023 with Yom Kippur on 9/25/2023. Also
read after code:

jnf40,

Personally, I use Calendar Creator to obtain the dates of Jewish Holidays. Its
built-in algorithm seems to work.

It, too, shows Rosh Hashanna beginning on the evening of 15 Sep 2023 and Yom
Kippur starting on the evening of 24 Sep 2023. So I would say the web site and
Calendar Creator are correct.

There is also an interactive calendar at http://www.hebcal.com/ with the
capability of downloading the results into various formats, including CSV file
(designed for Outlook but opens fine in Excel).
--ron