VBA Looping through dates and times?

hearsay9999

New Member
Joined
Jun 24, 2021
Messages
3
Office Version
  1. 365
  2. 2016
Platform
  1. Windows
Good afternoon, I'm relatively new to VBA and brand new to this forum, (this is my first post). I have been struggling to find a way to line up a dynamic range with a static range. I have looked around on this and other forums for code that might help me with what I'm trying to achieve but so for no luck. Can anyone help?

  • Column A - Dynamic date range, the number of dates listed will change.
  • Column B - Static time range, this will not change and will begin with 00:00 and end with 23:30 going up by increments of 30mins
  • Column D - This needs to be each date in column A replicated 48 times (for each 30 min interval in the day)
  • Column E - This needs to be each time interval from 00:00 - 23:30 repeated for as many dates showing in column D.
sample screenshot: On the 49th row, the next day will need to start in column D and in column E, the time will need to begin again at 00:00

1624564208883.png
 

Excel Facts

Test for Multiple Conditions in IF?
Use AND(test, test, test, test) or OR(test, test, test, ...) as the logical_test argument of IF.
Here's one way.
VBA Code:
Public Sub Generate_Dates_Times()

    Dim dates As Variant, times As Variant
    Dim d As Long, t As Long, r As Long
   
    With ActiveSheet
        dates = .Range("A2", .Cells(.Rows.Count, "A").End(xlUp)).Value
        times = .Range("B2", .Cells(.Rows.Count, "B").End(xlUp)).Value
        r = 1
        For d = 1 To UBound(dates)
            For t = 1 To UBound(times)
                r = r + 1
                .Cells(r, "D").Value = dates(d, 1)
                .Cells(r, "E").Value = times(t, 1)
            Next
        Next
        .Range("D2:D" & r).NumberFormat = .Range("A2").NumberFormat
        .Range("E2:E" & r).NumberFormat = .Range("B2").NumberFormat

    End With

End Sub
 
Upvote 0
This could be done without VBA if you know the maximum number of dates that could be put in A.

D2:
Excel Formula:
=IF(ROW()-1>COUNT(A:A)*48,"",INDEX(A:A,1+INT((ROW()-2)/48)+1,1))

E2:
Excel Formula:
=IF(ROW()-1>COUNT(A:A)*48,"",MOD(ROW()-2,48)*TIME(0,30,0))

Copy formulas down to row (max dates) x 48
 
Upvote 0
Public Sub Generate_Dates_Times() Dim dates As Variant, times As Variant Dim d As Long, t As Long, r As Long With ActiveSheet dates = .Range("A2", .Cells(.Rows.Count, "A").End(xlUp)).Value times = .Range("B2", .Cells(.Rows.Count, "B").End(xlUp)).Value r = 1 For d = 1 To UBound(dates) For t = 1 To UBound(times) r = r + 1 .Cells(r, "D").Value = dates(d, 1) .Cells(r, "E").Value = times(t, 1) Next Next .Range("D2:D" & r).NumberFormat = .Range("A2").NumberFormat .Range("E2:E" & r).NumberFormat = .Range("B2").NumberFormat End With End Sub
Fantastic!!! Thank you VERY much John! This does exactly what I was hoping for!!
 
Upvote 0
This could be done without VBA if you know the maximum number of dates that could be put in A.

D2:
Excel Formula:
=IF(ROW()-1>COUNT(A:A)*48,"",INDEX(A:A,1+INT((ROW()-2)/48)+1,1))

E2:
Excel Formula:
=IF(ROW()-1>COUNT(A:A)*48,"",MOD(ROW()-2,48)*TIME(0,30,0))

Copy formulas down to row (max dates) x 48
Thank you VERY much!! Unfortunately I'm not certain how many dates will be entered. I really appreciate the reply!
 
Upvote 0

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