Charles University offers over 200 doctoral study programs at its 17 faculties, in several languages and with various standard lengths of study (3-4 years). An up-to-date list of doctoral study programs and fields of study for an academic year is published four months before the deadline for submitting applications, which is usually by the 30th of April and by the 31st of December. Accurate data and information are available in the Schedule of Admission Procedure for the academic year or at the faculty's officers. The key person in the doctoral study is the supervisor. The list of supervisors allows the applicants to find and contact a suitable supervisor in order to specify the dissertation project.