Solved

Time culculation

Posted on 2002-06-01
7
230 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
Comment Utility
#!/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
Comment Utility
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
Comment Utility
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
Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

 
LVL 10

Expert Comment

by:rj2
Comment Utility
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
Comment Utility
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
Comment Utility
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
Comment Utility
It is working
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

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…
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…
This tutorial demonstrates a quick way of adding group price to multiple Magento products.

743 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

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now