5am

Let's sum these two numbers.

4 + 13 = 17 total hours.

In every 12-hour the clock format changes AM to PM or the opposite PM to AM. So we need to divide 12 with the result 17.

There are 1 times 12 number in the 17

If the result is ODD number the time format will change the opposite side. If the result is EVEN number the time format will be the same.

**Answer :**5am

What is 13 hours from 4pm ? = 5am.

Add 13 hours to 4pm is equal 5am.