Solved

Time culculation

Posted on 2002-06-01
7
265 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
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

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

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 …
Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
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…

752 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