TideCalendar.com

Jewish Calendar - Hebrew Calendar
Explains the relationship between the Hebrew civil calendar and Hebrew religious calendar and describes the history of the Hebrew month names.
www.angelfire.com/

Hebrew/English Calendar with Candle Lighting Times
Perpetual calendar for thousands of locations world-wide.
www.chabad.org/

The Aztec Calendar - Pointer/Homepage
Site breaks down all aspects of the Aztec calendric system
www.earthmatrix.com/

Lutheran Calendar
Calendars including the lectionary of the ELCA, ELCIC, LCMS and LC-C from Lutheran Worship and the Lutheran Book of Worship.
www.ashbypublishing.com/

Orthodox Ministry ACCESS Saint of the Day Calendar
A calendar of the saints and feast days.
www.goarch.org/

Hebrew Calendar Science and Myths
A collection of resources concerning the calculation of the Hebrew calendar.
www.geocities.com/

Pan - Orthodox Christian Events Calendar
Provides a place for Orthodox parishes to list local events on an interactive calendar free of charge.
www.oevents.com/

Georgian Orthodox Calendar
Calendar lists all of the saints commemorated by the Georgians.
www.angelfire.com/

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

The Orthodox Ecclesiastical Calendar
Discusses the various algorithms involved in the calculation of the date of Easter.
www.smart.net/