#Copyright (c) 2011 Michael R. Davis License BSD perl -e ' use DateTime; use Time::HiRes; use DateTime::Precise; my $dt=DateTime::Precise->new; printf "%s\n", $dt->asctime; my ($weeks, $seconds, $days)=$dt->gps_week_seconds_day; printf "Week: %s, Seconds: %s\n", $weeks, $seconds; print DateTime->new(qw{year 1980 month 1 day 6 time_zone UTC})->add(weeks=>$weeks)->add(seconds=>$seconds), "\n"; ' #### sub gps_week_seconds_day { my $self = shift; my $epoch_seconds = $self->gps_seconds_since_epoch; my $week = int($epoch_seconds/Secs_per_week); my $seconds = $epoch_seconds - $week*Secs_per_week; my $day = int($seconds/Secs_per_day); ($week, $seconds, $day); }