mongoose-query-by-date.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
mongoose.connect('localhost', 'testing_querybydate');

var schema = new Schema({
    created: Date
  , data: {}
});

var A = mongoose.model('A', schema);

mongoose.connection.on('open', function () {
  var a = new A({ created: new Date });
  a.save(function (err, a) {
    if (err) return console.error(err.stack||err);

    A.find({ created: { $lte: new Date('2012-05-16T20:54:35.630Z') }}, function (err, docs) {
      if (err) console.error(err.stack||err);
      console.error('found', docs);

      mongoose.connection.db.dropDatabase(function () {
        mongoose.connection.close();
      });
    });
  })
});