Rhonda plans to buy an $85 Father’s Day present for her father, and the holiday falls on the third Sunday of June. She can afford to put it on layaway with a 20% down payment and $8 a month after that

Rhonda plans to buy an $85 Father’s Day present for her father, and the holiday falls on the third Sunday of June. She can afford to put it on layaway with a 20% down payment and $8 a month after that. If payments are due at the beginning of each month, when should Rhonda make her first monthly payment?