func notification(date: Date, repeatUnit: NSCalendar.Unit?) -> UILocalNotification {
    let notification = UILocalNotification()
    notification.category = "ReminderCategory"
    notification.alertTitle = "Test"
    notification.alertBody = "Test Body"
    notification.soundName = "Sound1.m4a"
    notification.fireDate = date
    notification.repeatInterval = repeatUnit ?? NSCalendar.Unit(rawValue: 0)
    notification.timeZone = TimeZone.init(secondsFromGMT: 0)!

    return notification
}

let center = UNUserNotificationCenter.current()

    let content = UNMutableNotificationContent()
    content.title = "Title"
    content.body = "Your text"
    content.categoryIdentifier = "reminder-notification"
    content.sound = UNNotificationSound.default()


    var dateComponents = DateComponents()
    dateComponents.hour = Calendar.current.component(.hour, from: date)
    dateComponents.minute = Calendar.current.component(.minute, from: date)

    let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)

    let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
    center.add(request)