Solved

Time culculation

Posted on 2002-06-01
7
246 Views
Last Modified: 2010-08-05
Are there simple way to calculate number days passed after certain date.
E.g. after May 11 1955
0
Comment
Question by:desktop2
  • 3
  • 3
7 Comments
 
LVL 10

Expert Comment

by:rj2
ID: 7049308
#!/usr/bin/perl
use Date::Calc qw( Date_to_Days );
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
print "Days: ",Date_to_Days($year+1900,$mon,$mday) - Date_to_Days(1955,5,11);

0
 
LVL 10

Expert Comment

by:rj2
ID: 7049310
There should be a "+1" on the month

#!/usr/bin/perl
use Date::Calc qw( Date_to_Days );
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
print "Days: ",Date_to_Days($year+1900,$mon+1,$mday) - Date_to_Days(1955,5,11);

0
 

Author Comment

by:desktop2
ID: 7049476
Got an error :-(

Can't locate Date/Calc.pm in @INC (@INC contains: /usr/lib/perl5/i386-linux/5.00405 /usr/lib/perl5 /usr/lib/perl5/site_perl/i386-linux /usr/lib/perl5/site_perl .)
0
Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

 
LVL 10

Expert Comment

by:rj2
ID: 7049581
Download and install the module Date::Calc

http://www.cpan.org/authors/id/STBEY/Date-Calc-5.0.tar.gz

Check this link for info if you don't know to install module from CPAN

http://www.perldoc.com/perl5.6.1/pod/perlfaq8.html#How-do-I-install-a-module-from-CPAN-
0
 

Author Comment

by:desktop2
ID: 7052439
I have a problem to install the module since this script is running on remote service where I do not have access. Is it possible to do it without additional module?
0
 
LVL 84

Accepted Solution

by:
ozo earned 100 total points
ID: 7053386
sub jd {
    use integer;
    my($y,$m,$d) = @_;
    return ( 1461 * ( $y + 4800 + ( $m - 14 ) / 12 ) ) / 4 +
    ( 367 * ($m - 2 - 12 * ( ( $m - 14 ) / 12 ) ) ) / 12 -
    ( 3 * ( ( $y + 4900 + ( $m - 14 ) / 12 ) / 100 ) ) / 4 +
    $d - 32075;
}
my ($m,$d,$y) = (${{Jan=>1,Feb=>2,Mar=>3,Apr=>4,May=>5,Jun=>6,Jul=>7,Aug=>8,Sep=>9,Oct=>10,Nov=>11,Dec=>12}}{May},11,1955);
my $jd0 = jd($y,$m,$d);
($y,$m,$d) = (localtime)[5,4,3];
my $jd1 = jd(1900+$y,1+$m,$d);
print $jd1-$jd0,"\n";
0
 

Author Comment

by:desktop2
ID: 7060915
It is working
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I've just discovered very important differences between Windows an Unix formats in Perl,at least 5.xx.. MOST IMPORTANT: Use Unix file format while saving Your script. otherwise it will have ^M s or smth likely weird in the EOL, Then DO NOT use m…
On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question