How to prevent Sequelize from converting Date object to local time

I am using sequelize for a node project. It's connecting to a Postgres databsae, which contains a table with a DATE field (just date, no time).

In the code I'm modeling the date using a javascript Date object, which stores the time as UTC midnight. When I use that to insert a record into the table using that Date object, sequelize is apparently coverting it to local time first because the records are always 1 day behind. So if I want to insert 2000-10-31 into the database I end up with 2000-10-30. I am in UTC-5.

How do I tell sequelize to not convert the Date to a local time before inserting into the database?

Here is some sample code. I also created a repository if you want to run it yourself.

var Sequelize = require('sequelize');

const sequelize = new Sequelize('testdb', 'postgres', '???', {
    host: 'localhost',
    dialect: 'postgres'
});

TestTable = sequelize.define('date_test',
    {
        id: {
            primaryKey: true,
            type: Sequelize.INTEGER,
            autoIncrement: true
        },

        someDate: {
            field: 'some_date',
            type: Sequelize.DATEONLY
        }
    },
    {
        timestamps: false,
        freezeTableName: true
    }
);

// midnight UTC on Halloween 🎃
var date = new Date(Date.UTC(2000, 9, 31));

// converts to local time resulting in 2000-10-30
TestTable.create({ someDate: date })
    .then(function() {
        // also apparently converts to local time resulting in 2000-10-30
        return TestTable.create({ someDate: date.toUTCString() });
    })
    .then(function() {
        // convert to string, definitely works but seems unnecessary
        var strDate = date.getUTCFullYear() + '-' + pad2(date.getUTCMonth() + 1) + '-' + pad2(date.getUTCDate());
        return TestTable.create({ someDate: strDate });
    })
    .then(function() {
        // cerate a new local Date, also works but seems hacky
        var newDate = new Date(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate());
        return TestTable.create({ someDate: newDate });
    })
    .then(function() {
        process.exit(0);
    });


function pad2(n) {
    if (n.length === 1) {
        return '0' + n;
    }

    return n;
}

from How to prevent Sequelize from converting Date object to local time