We use a colon between the hour and the minutes when writing time.
2:13 two-thirteen
4:47 four forty-seven
6:00 six o’clock
When writing time, a colon separates the hour from the minutes.
▶Now you try it. Place a colon where it should go in this sentence: The plane is landing at 359 today. Did you put the colon between the hour and the minutes? Good for you!