I would like to remind you of the Arizona Board of Regent's policy on Religious Holidays, reprinted here.
Faculty members are responsible for reasonable accommodation of individual religious practices.
A refusal to accommodate is justified only when undue hardship would result from each alternative of reasonable accommodation. Administrators and faculty members are expected to reasonably accommodate individual religious practices. A refusal to accommodate is justified only when undue hardship would result from each available alternative of reasonable accommodation. No administrator or faculty member shall retaliate or otherwise discriminate against any student, employee or prospective employee because that individual has sought a religious accommodation pursuant to this policy. It is the responsibility of the president of each university, and the executive director of the Board as to the central staff, to take such actions as are necessary to insure that the intent of this policy is implemented.