What does "around 5:30" mean in English for Spanish?

In English for Spanish, "around 5:30" means:

sobre las 5:30

Listen to "around 5:30": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 2, Scene 12
• English for Spanish 3, Level 2, Scene 11
• English for Spanish 3, Level 3, Scene 1