Si te enfermas de repente por la noche o en un domingo la fiesta nacional (cuando me enfermé de repente en noche y domingo y una fiesta)

You can visit these medical facilities if you or someone else suddenly falls sick between the hours of 8 p.m. and midnight. They are open every day.
Centros Médicos De emergencia del tiempo de la noche que ofrecen el apoyo del idioma extranjero (el sitio externo) (únete al idioma extranjero compagina para los medios médicos en Yokohama City)

You can visit these medical facilities if you or someone else suddenly falls sick on Sundays, national holidays, or during the period from December 30-January 3.
Fiesta Clínicas De emergencia que ofrecen el apoyo del idioma extranjero (el sitio externo) (únete al idioma extranjero compagina para los medios médicos en Yokohama City)

You can visit these medical facilities if you or someone else suddenly falls sick after midnight. They are open every day. Please call before visiting. The available hospitals are as follows:
-Internal medicine departments: Ushioda General Hospital, Kikuna Memorial Hospital, Yokohama Shinmidori General Hospital, Yokohama General Hospital, Keiyu Hospital, Yokohama Asahi Central General Hospital, Higashi-Totsuka Memorial Hospital, Totsuka Kyoritsu No.1 Hospital, Totsuka Kyoritsu No.2 Hospital, and Koshinkai Shiomidai Hospital
- Pediatric departments: Saiseikai Yokohamashi Tobu Hospital, Yokohama Municipal Citizen's Hospital, Yokohama Rosai Hospital, Showa University Northern Yokohama Hospital, National Hospital Organization Yokohama Medical Center, Minato Red Cross Hospital, and Saiseikai Yokohamashi Nanbu Hospital

*Telephone services are only available in Japanese.