#!/usr/bin/perl use strict; use Spreadsheet::WriteExcel; my $workbook = Spreadsheet::WriteExcel->new( 'test1.xls' ); my $worksheet = $workbook->add_worksheet(); # set column format my $date_format = $workbook->add_format(num_format=>'m/d/yyyy h:mm'); $worksheet->set_column(0,0,15,$date_format);#width 15 $worksheet->write(0,0,'Date'); my $row2 = 1; while (my $date = ){ chomp($date); # convert to ISO8601 yyyy-mm-ddThh:mm:ss.ss $date =~ s/ /T/; $worksheet->write_date_time($row2,0,$date); ++$row2; } $worksheet->autofilter(0,0,$row2,0); $workbook->close; __DATA__ 2017-01-08 00:00 2018-04-01 11:00 2010-09-09 13:00 2013-07-09 19:00