Date1 is a Text Box.
Day1 is a List Box.

You can't have a control overlapping a List Box.

If that's not what you are trying to do please elaborate.

Thanks for your reply, then I understand the reason why it didn't work. Want it to look like this

Is there a way to change it so it can look like the picture?

For a Form or Report?

It is for a Form

Is it possible to format the Text Box with the same format as the List box?
That is, if Monday, November 25th is gray in the list box, the text box will also be gray

Just make the backcolor of the Text Box equal to the backcolor of the List Box.

    TextBoxName.Backcolor = ListBoxName.Backcolor

It worked great, but I have to click in the text box to get the same format. As soon as I click in the ListBox or in another ListBox, the format is the same as before. Could it be due to BeforeUpdate?

Have made a calendar and wonder if it is possible to overlap a text box over a list box in a form.

No, unfortunately, that's just one of the properties of a list box; it's always on top of other controls. There's really no way to do that. There is a trick you could do, which is to put the list box in a subform, but then you have to ask yourself why you are doing this. Why would you want to have a list box underneath another text box?

Ewa, I've moved your repeat question to your original thread, is there a reason you asked the same again?

This is going in the next QQ video.