change the dates to ISO format for calculation
test F&R.ods (application/vnd.oasis.opendocument.spreadsheet), 281.58 KB, created by erikwitter on 2019-09-01 07:45:22 UTC
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Creator: erikwitter
Created: 2019-09-01 07:45:22 UTC
Size: 281.58 KB

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Attachments on bug 127239: 153786