How can I convert GPS time in seconds to something readable, say UTC time? For example I have GPS time in seconds = 915725119. I use http://www.mapshots.com/tools/gps_time.asp and get "1/7/1999 4:05:19 PM" -- the time matches what I see on my device (i can't confirm date). I tried Time::GPS and DateTime::Format::Epoch::MJD as follows: 
use Time::GPS qw(gps_instant_to_mjd gps_mjd_to_instant);
use Math::BigRat;

my $x = Math::BigRat->new('915717017');
my $mjd = gps_instant_to_mjd($x);
print "$mjd\n"; # 2021871299/43200

use DateTime::Format::Epoch::MJD;
my $dt = DateTime::Format::Epoch::MJD->parse_datetime( $mjd );
print $dt; # 1987-01-06T00:00:00

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Obviously something there is wrong, but what? What's the best way to do such conversion, anyway? Many thanks in advance.

In reply to Converting GPS seconds to readable time&date by flamey

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