15 hours ago

The time 15 hours from now is 11:34 PM, Sunday, June 22, 2025.This calculation is made using the current time, which is 2:34 PM

Start time - Display the time when the user lands on the page

Enter value - user should able to customize the time

Calculate: Display the time as user enter the value

You can figure out the time eight hours from now by adding 15 to the hours in the current time (2:34 PM).

If the current time is before noon and the hours in the resulting time are greater than 12, then subtract 12 from the hours in the result and add a PM to the time since the result is in the afternoon.

If the current time is after noon and the hours in the resulting time are greater than 12, then subtract 12 from the hours in the result again and add an AM to the time since the result is the following morning.

You can also use this method to find the time 15 hours ago.