[{date:"2021-12-01 00:00:00.0",},{date:"2021-12-02 00:00:00.0",}]

db.collection.aggregate([{$addFields:{report_date:{$dateFromString:{dateString:"$date"}},report_date3:{$dateFromString:{dateString:"2021-12-01"}}}},{$match:{$expr:{$eq:["$report_date","$report_date3"]}}}])