CalendarEnumerateDates.swift

let fromDate = Date()
let toDate = Date()
let calendar = Calendar.current
let components = DateComponents(hour:0 , minute: 0, second: 0)

guard let startDate = calendar.date(byAdding: .day, value: -1, to: from) else {
    return
}

calendar.enumerateDates(startingAfter: startDate, matching: components, matchingPolicy: .nextTime) { date, strict, stop in
    guard let date = date else { return }                                                                                
    if date == nil || date > toDate {
        stop = true
        return
    }

    // ...
}