Other Uses Of Colon

We also use a colon to separate hours, minutes and seconds when recording the time.

Come over around 8:15.

Mary was gone by 9:00 p.m.

The timer is set for 16:30:15.

In literature, it can be used to separate chapters and verses, or acts and scenes.

Turn to III: iv in the play.

A famous Bible passage is Luke 2:16.

Commas can be used to identify the name of the speaker in a lengthy section of dialogue such as in a play.

Martin: Where have you been?

Alan: Out. Walking.

Martin: Do you know what time it is?

Alan: No. And I don’t care, either.

In a business letter, the salutation can be followed by a colon.

To Whom It May Concern: