Now that you have found the Sentinel Artifact and activated the Pack-a-Punch, it is time to proceed. The next step is to find the six clocks that are located all around the map. Upon activating the Pack-a-Punch, four of these clock faces will have changes their time.
The default time for these clocks is 11:40, which was the time the Titanic struck the iceberg. If the clock is not displaying this time, it means that it has been changed.
Wait what the fuck. I don't get this step