function timeCov(timet) {
    var date = new Date(timet);
    Y = date.getFullYear() + '-';
    M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
    D = date.getDate() < 10 ? "0"+ date.getDate() : date.getDate();
    // h = date.getHours() + ':';
    // m = date.getMinutes() + ':';
    // s = date.getSeconds();
    return (Y + M + D);
}