Vb.net 如何在图表的x轴上设置日期格式？

我已经编写了以下VB.NET代码，它将标准分数作为日期和时间的函数绘制在Windows窗体上

Public Sub PopulateChart(ByVal PairId As Integer, ByVal SymbolA As String, ByVal SymbolB As String)
    Dim DateTimes As List(Of DateTime)
    Dim StandardScores As List(Of Double)
    Me.Visible = True
    Me.BringToFront()
    Me.Text = SymbolA & " " & SymbolB
    graStandardScores.Series("StandardScores").Points.Clear()
    DateTimes = GetStandardScoreDates(PairId)
    StandardScores = GetStandardScores(PairId)
    For i = 0 To StandardScores.Count - 1
        If Double.IsInfinity(StandardScores(i)) = False Then
            graStandardScores.Series("StandardScores").Points.AddXY(DateTimes(i), StandardScores(i))
        End If
    Next i
End Sub

每个点相隔30秒，数据跨越数天。我想每天只在x轴上显示一个标签，但每天每小时也显示一个标签。实现这一目标的最佳方式是什么