Home >Service hours of CU Link Card Centre The opening hours of CU Link Card Centre Service hours of CU Link Card Centre as follows:Mon to Thu: 08:45 – 17:30Fri: 08:45 – 17:45(Saturday, Sunday and Public Holidays are closed.) Should you have any enquiries about CU Link Card, please leave message at https://culink.cuhk.edu.hk/contact-us/enquiry/.