A suggestion for greater accuracy of the values you enter (and subsequently get back) is as follows: If you are observing your earnings on your account and you are partially through a day, subtract mentally the amount for that day from the total for the month. In the expired days field, put in the number of days NOT including the partial day. That should yield a much closer daily earned value and hourly earned value. Or, you may enter the partial day earnings in the partial earnings field and it will be deducted for you from the current earnings in the calculation, the earnings figure used will show in the earnings used field. Again, in the expired days field, put in the number of days NOT including the partial day.