To calculate 2 days, 18 hours, and 0 minutes in the past, we can start by converting the given time into a single unit. There are 24 hours in a day, so we first convert 2 days into hours: 2 days = 2 x 24 = 48 hours. Next, we add the additional 18 hours to get a total of 48 + 18 = 66 hours. Finally, we convert these hours back into days and hours, resulting in 2 days, 18 hours, and 0 minutes in the past.