Under the event details in Calendar you have two options to alert you of an up coming event. The fires is "Alert" located under calendar...If you tap that it gives you options such as 5 minutes before, one hour before etc. Once you make a selection, the screen reverts back to event details screes. Under the "Alert" function is now a "Second Alert" option, again to give the person a second reminder of an upcoming event. With the lasted software upgrade with Apple this function does not function correctly. When you choose the reminder option for the first alert, then choose a different option for the second alert which is different then the first. They both Alert and Second Alert revert to whatever you choose the second time. I hope this makes sense to everyone. This was never this way prior the the IOS9. I called Apple and they explained that the Second Alert - is set to remind a person the day before the event, and the alert(first) is for the day of the event. I'm I missing something here???? Confusing and backwards......