How long does it take to make a delivery from location $1$ to location $6?$

fill in the blank $46$ minutes

Assume that it is now $1$:$00$ P$.$M$.$ and that CARD just received a request for a pickup at location $1.$ The closest CARD courier is $8$ minutes away from location $1.$ If CARD provides a $20\%$ safety margin in guaranteeing a delivery time, what is the guaranteed delivery time if the package picked up at location $1$ is to be delivered to location $6?$

Enter the answer in HH:MM time format.