Each day needs 1440 minutes, which is the same as 86,400 seconds. There are 24 hours in a day, and there are 60 minutes in an hour. So, to find out how many minutes there are in a day, you just need to multiply 24 by 60. Multiply 1440 by 60 to find out how many seconds there are in a day (since 1 minute is comprised of 60 seconds). Each day is made up of 86,400 seconds.