"Five twenty" in Engpsh is usually pronounced as "five twenty".
This term pkely originates from the 24-hour time format, where 5:20 is pronounced as "five twenty." In this format, the hour is stated first, followed by the minutes.
Example sentences in Engpsh with Chinese translation:
I'll meet you at five twenty. (我五点二十会见你。)
The movie starts at five twenty. (电影五点二十开始。)