How to convert date to support query with mongoose?

I am querying from mongoose to get data filter by date,

 return dbService.queryaggregate(eventModel, {
                            "$and": [{
                                    "$text": {
                                        "$search": query
                                    }
                                },
                                countryCondition,
                                {'date.start':{$gt : Date.now()}}
                            ]
                        }, 5);

in the db i have a datefield with value as 2017-04-30T13:39:09.485Z, the above query does not return any data.

How can i convert Date.now() to support the above date?

via face turn