moment.js - Check if two moments are from the same week, but weeks begin on Friday and end on Thursday

I am creating a Discord bot with node.js and discord.js, and there's a feature that allows users to vote thanks to a command, but I'd like them to vote only once a week.

The issue is that, on this Discord, weeks start on Friday and end on Thursday, therefore I can't simply write :

var weekNow = moment().week();
var weekLastVote = moment(dateLastVote).week();
if (weekNow == weekLastVote){
    //Prevent from voting again
} else {
    //Let the user vote
}

Therefore, I have written some code that seems to work, but I'd like your opinion on it as it seems very sloppy and I'm not sure if I have taken into account all of the possibilities (I don't know if I need to use my month variables for example):

module.exports = {
isSameWeek: function (dateLastVote) {
    // moments for today's date
    var dayNow = moment().weekday();
    var weekNow = moment().week();
    var monthNow = moment().month();
    var yearNow = moment().year();
    var dateNow = moment().format('MMDDYYYY'); // moment without hours/minutes/seconds

    // moments for last vote's date
    var dayLastVote = moment(dateLastVote).weekday();
    var weekLastVote = moment(dateLastVote).week();
    var monthLastVote = moment(dateLastVote).month();
    var yearLastVote = moment(dateLastVote).year();
    var dateLastVote = moment(dateLastVote).format('MMDDYYYY'); // moment without hours/minutes/seconds

    if ((yearNow === yearLastVote && weekNow === weekLastVote && dayLastVote < 5) || // 5 = Friday, starting day of the week (a week = Friday to thursday)
        (yearNow === yearLastVote && weekNow - 1 === weekLastVote && dayLastVote >= 5 && dayNow < 5) || 
        (dateNow === dateLastVote)
    ){
        return true;
    } else {
        return false;
    }
}

};

As I said, this seems do to the trick but I would like someone else's opinion on it to be sure there isn't a simpler way or, if there isn't, if I haven't forgotten anything.

Thank you for reading :)

via Tokipudi