where子句中的日期比较：在具有流明的mongodb中

in mongodb date is stored in below format ,

"delivery_at" : {
        "date" : "2018-11-15 13:41:38.000000", 
        "timezone_type" : NumberInt(1), 
        "timezone" : "+00:00"
    }, 

in my search string date is passed as below,

$data = "2018-11-16";

my query is like below for mongodb,

 $query->where("delivery_at", ">=", new \DateTime($data ));

but it not gives me expected result with mongodb

Laravel's Eloquent supports Carbon/DateTime objects
for more reference you can go to How to compare date with mongodb iso date in laravel mongodb eloquent query? hope it help