Let's sum these two numbers.
1 + 3 = 4 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 4.
There are 0 times 12 number in the 4
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 :4am
What is 3 hours from 1am ? = 4am.
Add 3 hours to 1am is equal 4am.