It was a one day trip from Hong Kong. For entire trip see:

http://www.worldisround.com/articles/25867/index.html

Macao was the oldest permanent European settlement in East Asia. It was a parched and desolate spot when the Portuguese established a trading post there in 1557. For nearly 300 years the Portuguese paid China an annual tribute for the use of the peninsula, but in 1849 Portugal proclaimed it a free port. With the gradual silting up of its harbor and the rise (19th cent.) of Hong Kong, Macao lost its preeminent position. ... (more)