A profitable day is a day on which the closed positions made a positive profit* of at least 0.5% of the initial balance.
*The positive profit is calculated as follows: Minimum(Midnight Balance, Midnight Equity) - Previous Day Balance
Eg; Account size of $100K for you to gain a profitable day you will need to close the day with a min of $500 net in profit.
$100,000*0.005= $500