my @older_events = (
    surname => [
        qw(
            red
            brown
            simpson
            donald
        )
    ],
    date => [
        qw(
            2018/02/14
            2018/03/09
            2018/05/01
            2018/08/02
        )
    ],
    time => [
        qw(
            01:00:52
            01:06:41
            03:24:31
            19:14:31
        )
    ]
);

my %new_events = (
    surname => [
        qw(
            simpson
            donald
            blanco
            ernald
        )
    ],
    date => [
        qw(
            2018/03/09
            2018/08/02
            2018/08/01
            2018/08/14
        )
    ],
    time => [
        qw(
            03:24:31
            19:14:31
            00:03:16
            09:21:45
        )
    ]
);