Dates of all major and minor Jewish holidays and fast days, with explanations, observances, and links to other articles of interest. From the OU.

Monthly calendar generated as a web page, including Hebrew dates, Jewish holidays, and parsha readings. Also includes C++ source code (open source).

Interactive web interface for generating a list of Jewish dates and times customized to zip codes, converting between Hebrew and Gregorian dates.

A collection of resources concerning the calculation of the Hebrew calendar.

Interactive Web program that prints out Jewish and Civil calendars side-by-side. Does not list holidays in either calendar. Source code available.

Online Hebrew civil calendar portal. Also receive email reminders of holidays and personal events.

The Ancient Hebrew Calendar with the original Sabbath placement according to Almighty God's instructions given to Moses for the Israelite Nation, around the year 1500 BCE, commencing at the Exodus from Egypt.

Complete information about "Hebrew Calendar" software products, including "Hebrew Calendar for Windows" and "Hebrew Calendar Date Converter ActiveX Control." Evaluation copies available for download.

Perpetual calendar for thousands of locations world-wide.

Hebrew and english calendar for Windows. Displays a Hebrew or civil month with holidays, Shabbat portions, and halachic times. User data can be added.

Converts dates between Jewish and civil calendars; displays monthly calendars and candlelighting times for different geographical location.

List of notable events in Jewish history, organized according to Gregorian calendar dates.

Complete Hebrew calendar program for Unix and Windows. Candlelighting times, holidays, Omer counts, and Torah readings. C and Perl source code available, as well as a Windows executable and links to Web versions of the software.

Explains the relationship between the Hebrew civil calendar and Hebrew religious calendar and describes the history of the Hebrew month names.