In order to convert 0 days, 20 hours, and 49 minutes into the past, we need to start by converting the hours and minutes into a single unit.

There are 24 hours in a day, so 20 hours is equivalent to 0 days and 20 hours.

Next, we convert the 49 minutes to hours by dividing by 60. This gives us approximately 0.81 hours.

Adding the 20 hours and 0.81 hours gives us a total of about 20.81 hours in the past.

Now that we have the total hours, we can convert it back into days by dividing by 24. This yields approximately 0.87 days in the past.

Therefore, 0 days, 20 hours, and 49 minutes in the past is equivalent to approximately 0.87 days or 20 hours and 49 minutes.