If your on the east coast and calling the west coast you are 3 hours ahead of pacific time so if you call at 9 am EST your calling 6 am PST. Central time is one hour behind eastern standard time.
A clerical officer is a person who handles a wide variety of administrative and clerical responsibilities for a particular employer. Specific duties differ for each position, but clerical officers generally support the activities of executive staff.
Warrant Officers are found in the Army, Army Reserve and Army National Guard. The definition is an officer appointed by warrant by the Secretary of the Army, based on a sound level of technical and tactical competence.