gistfile1.js

var mydate = new Date(); // Today's date

var myday = mydate.getDate() + ''; // String corresponding to today's day-of-the-month
var mymonth = mydate.getMonth() + ''; // String corresponding to today's date's month
var myyear = mydate.getFullYear() + ''; // String corresponding to today's date's year

var rules = {};

rules[myyear] = {};
rules[myyear][mymonth] = {};
rules[myyear][mymonth]["1-" + myday] = "myDisabledDatesRule";