Alert Times for All Day Calendar Events

You can let Apple know what you'd like to see here:

Product Feedback - Apple

You might also try to look at some of the thousands of third-party calendar apps available in the App Store to see if there's one that better meets your needs. One I've used, Fantastical, does allow you to set the all-day alert to anything your heart desires.

When I add a new event to the calendar on my iPhone, I don't see that option.

I think you're showing what happens on a Mac? Of course, that does bring up the question of what the OP is actually using. I was basing my response on the equipment line under their post. But, the particular forum in which they've posted makes it all unclear. Hopefully, they will clarify.

You can also use Shortcuts. Put it on your Home Screen and you won't need to open Calendar to create those events (or any event).

Just a one-action shortcut where you can enter any alert time. Use Add New Event.

When you run it:

Type it in a natural way

After that the main sheet appears, notice the alert.

It's true that's it's pretty lame to have such limited choices on the phone. But here's a trick.

On the Mac create an all-day event some day in the past with a title (as an example) such as allday5AM and set the alert for 5 AM. Then when you want to create an all-day event on the iPhone with an alert at 5AM start typing allday as its Title. Calendar will suggest the past event with a similar title, the one you previously created on the computer. Select it. You can change the title and other details but the custom alert time will remain.

You can create a few of these for your most common custom alert times.

That's quite clever! Hopefully, the original poster has a Mac.

I use Fantastical on my phone if I need to set an alert for an all-day event at some other time. I don't use the Calendar application on my Mac. For some reason, I've never liked it. Don't like Mail, either.

ChrissySchear wrote:

hello and correct! I am using my iPhone...any mac-related solutions won't apply =)

The solutions Recycler offers should work on the phone once you set them up on your Mac. Or, use something like Fantastical.

You mean like that? A Custom alert? It's at the bottom the choices. Too bad it cannot be set by default.

What device are you using? Is it the iPhone 13 mini showing under your post? Or something different?

Yes the pictures were taken on a Mac but I made the same shortcut on my iPhone and it works. I didn't post the screenshots from my phone because they were in French but I assure you it works.