Date base (1900 or 1904) wasn't taken into account in read-cell for
formula date cells.
Now it's fixed. read-cell-value for Cell/CELL_TYPE_NUMERIC doesn't use
date-format? internally, but isn't removed to save backward
compatibility. Moreover workbook method that can show if workbook uses 1904 base date (e.g. XSSFWorkbook.isDate1904) is protected and thus can't be used without inheritance or dirty hacks AFAIK.
However read-cell-value itself doesn't consider date base as it isn't
present in cell value and requires changing method args.
P.S.: test files sizes are smaller probably because thumbnails are not included.
Date base (1900 or 1904) wasn't taken into account in
read-cellfor formula date cells. Now it's fixed.read-cell-valueforCell/CELL_TYPE_NUMERICdoesn't usedate-format?internally, but isn't removed to save backward compatibility. Moreover workbook method that can show if workbook uses 1904 base date (e.g.XSSFWorkbook.isDate1904) is protected and thus can't be used without inheritance or dirty hacks AFAIK. Howeverread-cell-valueitself doesn't consider date base as it isn't present in cell value and requires changing method args.P.S.: test files sizes are smaller probably because thumbnails are not included.