function parseDate(date) {
    months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    date = date.split(',');
    date[1] = date[1].match(/[0-9]{4}/)[0];
    date = date.concat(date[0].split(' '));
    month = 1 + months.indexOf(date[2]);
    return Date.parse(date[1] + "-" + month + "-" + date[3]);
}

if (value === "N/A") {
    return -1;
} else {
    value = parseDate(value);
    now = Date.now();
    return Math.floor((value - now) / 1000);
}