Clock Time Calculator: Hours Before / After

This calculator helps you find out the exact time of specific hours before or after a certain time. So to get started, enter a value in the input bar and click on the button.

When you count 8 hours after from 5:00 PM , the time is 1:00 AM .

1:00 AM
Saturday, October 4, 2025

Are you looking for a different date calculation? Try our Days From a Date Calculator to find a date from a number of days from a specific date.

Clock time calculation table:

Description Time
9 hours after 5:00 PM: 2:00 AM
10 hours after 5:00 PM: 3:00 AM
11 hours after 5:00 PM: 4:00 AM
12 hours after 5:00 PM: 5:00 AM
13 hours after 5:00 PM: 6:00 AM
14 hours after 5:00 PM: 7:00 AM
15 hours after 5:00 PM: 8:00 AM
16 hours after 5:00 PM: 9:00 AM
17 hours after 5:00 PM: 10:00 AM
18 hours after 5:00 PM: 11:00 AM
19 hours after 5:00 PM: 12:00 PM
20 hours after 5:00 PM: 1:00 PM

Clock time examples:

Here are some examples of how clock time is used.

If you are interested to see other types of times and dates visit here.