you_spent_X_%_of_this_year.js

var now = new Date();
var last_nyd = new Date(now.getFullYear(), 0, 1);
var next_nyd = new Date(now.getFullYear() + 1, 0, 1);
var rate = (now - last_nyd) / (next_nyd - last_nyd);
var beginning_of_today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
var one_day = 1000 * 60 * 60 * 24;
var pdate = new Date(beginning_of_today.getTime() + rate * one_day);
var hours = pdate.getHours();
var ampm = hours > 12 ? "PM" : "AM";
hours = hours > 12 ? hours - 12 : hours;
alert("You spent " + ((rate*1000|0) / 10) + "% of this year.\n" + 
      "If a year were a day, it would be " + hours +":"+ pdate.getMinutes() +":"+ pdate.getSeconds() +"."+ pdate.getMilliseconds() +" "+ ampm + " now.");