The University of Maryland provides the following list as a courtesy to faculty who may wish to avoid common religious observances when scheduling major assessments in courses. 

The TLTC has provided access to an Interfaith Calendar of Common Religious Observances that should be referenced when scheduling major assignments.

For more details, please refer to the official campus policy for guidance regarding conflicting academic assessments and religious observances in the Course Related Policies section entitled  "Attendance, Absences, or Missed Assignments."