To reproduce: 

Hello,

I am writing a piece of code in VB that converts Excel files that a user uploads into PDF files.  It merges all of them into one fixed document and exports that fixed document to a PDF. Whenever I upload specifically the "Schedule" default layout from Google Sheets, exported to xlsx format, all my times are changed from 9:30 AM or 1:28 PM to 9:12 AM and 1:12 PM respectively.

Reproduction Steps:

1. Make a new sheet on Google Sheets using the "Schedule" layout.
2. Export it to .xlsx
3. Read the file into a spreadsheet, convert that spreadsheet to a PDF, save it, and open the PDF.
4. All of the times should be incorrectly written.

A few key notes that may help with resolving the issue :

• The conversion from .xlsx to a Workbook datatype does not have any issues. When importing to Workbook then exporting to XLSX, the sheets remained unchanged.
• MS Excel does not have any issues viewing the exported XLSX file with the correct times, which means it is most likely a problem with the ExportToFixedDocument process.
• Writing times in the same format manually and exporting it from Google Sheets does not create this bug. So far, I have only found that the "Schedule" layout will cause this issue.

Below I have written a snippet of my code, as well as included the xlsx file and the pdf file that results from it. I am using one of the latest versions of Telerik Document Processing, having been downloaded on 6/25/2021. 

Case".xlsx"
Using infileStream As Stream = File.OpenRead(inputFilePath)
    Dim inputFormatter AsNew Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider
    Dim imported As Spreadsheet.Model.Workbook = inputFormatter.Import(infileStream)

    imported.ActiveWorksheet.WorksheetPageSetup.PaperType = Model.PaperTypes.Letter
    imported.ActiveWorksheet.WorksheetPageSetup.CenterHorizontally = True
    imported.ActiveWorksheet.WorksheetPageSetup.FitToPages = TrueDim format AsNew Spreadsheet.FormatProviders.Pdf.PdfFormatProvider
    Dim fixedDoc As Fixed.Model.RadFixedDocument = format.ExportToFixedDocument(imported)

    primaryDoc.Merge(fixedDoc)
EndUsing

In some cases when cells are merged the cell borders are not correctly imported.