Bonjour,
A tester
Public Sub test()
Dim ws As Worksheet, nbRows As Long
Application.ScreenUpdating = False
Set ws = ActiveSheet
With ws
nbRows = .Cells(Rows.Count, 1).End(xlUp).Row
For i = 2 To nbRows
If .Cells(i, 1) = Date Then .Cells(i, 1).Copy Destination:=.Cells(i, 3)
Next
End With
Set ws = Nothing
End Sub