Local notifications relative from now isn’t working

Ionic Native
1

I’m trying to schedule a time relative notification.

    this.localNotifications.schedule({
      id: 3,
      trigger: {
        in: 1,
        every: ELocalNotificationTriggerUnit.HOUR
      },
      title: 'every 1 Hour',
      text: 'Every 1 Hour schedule',
      foreground: true,
      sound: this.isAndroid ? 'file://sound.mp3' : 'file://beep.caf'
    });

But the notification appears on round hour.
For example if I schedule a notification at 7:45 PM the notification will appear at 8:00 PM instead of 8:45 PM.
Any idea how to achieve this?