Calendar of Religious Holy Days and Observances

^{-Hindu, Jain, and Sikh holy days are calculated on a lunar calendar and are observed at different times in different regions.
-All Jewish and Bahá'í holy days begin at sunset the previous day.
-Observances/practices vary from culture to culture within and across denominations.}

Work-Restricted Religious Holy Days

A recognized denominational sacred or holy day that is observed by persons or groups who are required - through a set or system of religious beliefs, laws/doctrines, tenets, canons or theology - to restrict or limit work and/or physical or mental activity directed toward the production or accomplishment of something; toil; labor. This definition may include academic endeavors (e.g. examinations, classroom activities and research, or out-of-classroom learning experiences).

Sunday is widely observed as a Sabbath and day of worship for many faith traditions. In the Jewish faith, Saturday (beginning at sunset on Friday) is a work-restriced Sabbath. Regulations governing observance for worship depends on regional customs.

There are no work-restricted holy days within the Christian faith by tenet. By custom, in the United States, Easter and Christmas (a federal holiday) are considered to be non-work days.

Religious, Sectarian, and Ethnic Observances

Special worship: Such religious observances listed above are NOT work-restricted by definition but may involve a special worship or observance.

Meaningful: Such days listed below are NOT work-restricted by definition but may be particulartly significant to persons attending or working at a Jesuit Catholic university.

2012