In early 2002, Kaohsiung City Medical Association (the respondent), in an official letter drafted by Disciplinary Committee Director Chen Si-Chuan and sent to members in the name of association Chairman Hsiao Chi-wen, notified members that beginning in February 2002 on a trial basis, primary care clinics in the association's northern and southern jurisdiction would begin a rotating holiday system on Sundays, with those clinics in the southern jurisdiction (the city's Hsinhsing, Lingya, Hsiaokang, Chienchin and Chienchen districts) closing on those Sundays falling on even-numbered dates and those clinics in the northern jurisdiction (the city's Sanmin, Tsoying, Nantze, Chichin, Kushan and Yencheng districts) closing on those Sunday falling on odd-numbered dates.
Source: wiktionary