Convert Date DD/MM/YYYY to 7 Digit Julian Date in Perl

Question

I have not used Julian date before and have no experience with it. I do not know how the 7-Digit needs to be converted or if there is a library that does it.

I require help with 10/10/2020 to be converted to 2459133 in Perl.

Answer 1

Time::Piece is part of the standard Perl library.

#!/usr/bin/perl

use strict;
use warnings;
use feature 'say';

use Time::Piece;

# Get a Time::Piece object from your date string
my $d = Time::Piece->strptime('10/10/2020', '%d/%m/%Y');

# Call its julian_day() method.
say $d->julian_day;