Calculation with DATEs

[Dietmar Kehr]

I need a procedure for calculations with dates,
e.g. let
$date1= 22 June 1960
$date2= 29 August 2004
then i would appreciate a procedure that calculates
the time-difference from $date1 until $date2 and such things.

Are there data-formats for dates and such
procedures? Where do I find them?

Best regards.

 

[Gunnar Hjalmarsson]

I need a procedure for calculations with dates,
e.g. let
$date1= 22 June 1960
$date2= 29 August 2004
then i would appreciate a procedure that calculates
the time-difference from $date1 until $date2 and such things.

Are there data-formats for dates and such
procedures?
Yes.

Where do I find them?

In the part of the docs that describes built-in functions and in CPAN.

Surprise, surprise...

 

[Paul Lalli]

I need a procedure for calculations with dates,
e.g. let
$date1= 22 June 1960
$date2= 29 August 2004
then i would appreciate a procedure that calculates
the time-difference from $date1 until $date2 and such things.

Are there data-formats for dates and such
procedures? Where do I find them?

Best regards.

Have you bothered to read the FAQ yet?

perldoc -q date
Found in /opt/perl/lib/5.6.1/pod/perlfaq4.pod
How can I compare two dates and find the difference?

Read that, follow the suggestions contained therein, and if you don't
understand or have trouble implementing the results, feel free to try
posting here again.

Paul Lalli

 

[William James]

I need a procedure for calculations with dates,
e.g. let
$date1= 22 June 1960
$date2= 29 August 2004
then i would appreciate a procedure that calculates
the time-difference from $date1 until $date2 and such things.

Since they won't help you, I'll step in. Use Ruby.

require 'date'

puts Date.new(2004,8,29) - Date.new(1960,6,22)
puts Date.new(1960,6,22) + 16139
puts Date.new(2004,8,29) - Date.new(2004,7,31)
-->
16139
2004-08-29
29

 

[Simon Taylor]

I need a procedure for calculations with dates,
e.g. let
$date1= 22 June 1960
$date2= 29 August 2004
then i would appreciate a procedure that calculates
the time-difference from $date1 until $date2 and such things.

Are there data-formats for dates and such
procedures? Where do I find them?

See:

http://www.perlmeme.org/faqs/datetime/comparing_dates.html
and
http://www.perlmeme.org/faqs/datetime/datetime_overview.html

Regards,

Simon Taylor