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07.16.2007 at 05:37AM PDT, ID: 22698427
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Number of days between two dates

Tags: days, between, dates, two, number
Experts,

I am trying to get the number of days between two dates, ie;

2007-01-30
2007-03-30

I will then use this to carry out a while loop.
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Question Stats
Zone: Programming
Question Asked By: mhouldridge
Solution Provided By: Adam314
Participating Experts: 5
Solution Grade: A
Views: 59
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07.16.2007 at 06:52AM PDT, ID: 19495528

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07.16.2007 at 07:06AM PDT, ID: 19495691

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07.16.2007 at 07:18AM PDT, ID: 19495820

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07.16.2007 at 02:51PM PDT, ID: 19500097

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07.16.2007 at 05:56PM PDT, ID: 19501412

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07.16.2007 at 06:52AM PDT, ID: 19495528
python -c "from datetime import date; print (date(2007,1,30)-date(2007,3,30)).days"
 
07.16.2007 at 07:06AM PDT, ID: 19495691
convert the both dates into timestamp, then find different, then from the different miliseconds find the number of days.
 
07.16.2007 at 07:18AM PDT, ID: 19495820

Rank: Genius

my $t1 = timelocal(0,0,0, 30,1-1,2007);
my $t2 = timelocal(0,0,0, 30, 3-1, 2007);

print "diff=" . (($t2-$t1)/60/60/24) . "\n";
Accepted Solution
 
07.16.2007 at 02:51PM PDT, ID: 19500097

Rank: Genius

my $t1 = timelocal(0,0,0, 30,1-1,2007);
my $t2 = timelocal(0,0,0, 30, 3-1, 2007);

print "diff=" . (($t2-$t1)/60/60/24) . "\n";
could be a little off if the dates span a daylight savings switch
You can get around this by either using  timegm instead of timelocal
or rounding like
printf "diff=%.f\n", (($t2-$t1)/60/60/24);
 
07.16.2007 at 05:56PM PDT, ID: 19501412

Rank: Sage

There's always Date::Manip (see http://search.cpan.org/~sbeck/DateManip-5.44/Manip.pod).  It's pretty heavy duty if your task is just to find the difference between two timestamps, but if you ever need to figure something like "how many business days are between two dates", Date::Manip handles it well.
 
 
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