Companion to the Calendar is designed to complement the liturgical calendar of the saints followed during the year. Not only the book a guide to the saints but also to occasions that are special days for children and adults alike. "Who is St. Romuald? What is Los Posadas? Why do we celebrate Mother's Day?" are some the the who, why and what questions answered in the book by Mary Ellen Hynes. Companion to the Calendar has been revised to include additional saints celebrated in the diocese of the United States of America. The book has biographical information on saints that are celebrated on the liturgical calendar, theological meanings of the different liturgical seasons, explanations of Jewish and Muslim holidays and special secular days. Marian and sanctoral observances have also been added along with devotions from other cultures and observances of special days such as Catholic Schools Week and World day of the Sick. Companion to the Calendar is a great resource to use along with the liturgical calendar of the saints and the additions of information about special days makes this a calendar that will be a big help to anyone from liturgical leaders to religious education teachers.