Punctuation Questions Medium
A colon is used in time expressions to separate hours from minutes when writing the time in a digital format. For example, if it is 3:45, the colon is used to indicate that it is 3 hours and 45 minutes. The colon is also used in time expressions to separate the hour from the minutes when indicating a specific time, such as 8:30 AM or 6:15 PM. Additionally, a colon can be used to separate the hour, minutes, and seconds when indicating a precise time, such as 12:45:30.