"Dangan fare,” which is a special 18,000 yen (excluding fuel surcharge) fare for a one-day trip to Hong Kong. .....For instance, if you depart from Narita at 9:40 a.m. on CX509 and arrive in Hong Kong 13:25, you then spend the afternoon and evening in Hong Kong and return on board CX524 that departs from Hong Kong at 01:00, arriving at Narita 6 a.m. the next day."
Source: Cathay Pacific
By Chris Betros
MAY. 20, 2013