[{"_id":ObjectId("5c05984246a0201286d4b57a"),f:"x","_a":[{"_onlineStore":{}},{"_p":{"s":{"a":{"t":[{"dateP":"2020-09-20","l":"English","size":"XXL"}]},"c":{"t":[{"dateP":"20300-09-20","l":"English","size":"XXL"}]}}}}]}]

db.collection.aggregate([{$unwind:"$_a"},{$project:{_id:0,f:1,data:{$objectToArray:"$_a._p.s"}}},{$unwind:"$data"},{$unwind:"$data.v.t"},{$set:{dateParts:{"$split":["$data.v.t.dateP","-"]}}},{$project:{year:{$toInt:{$arrayElemAt:["$dateParts",0]}},month:{$toInt:{$arrayElemAt:["$dateParts",1]}},day:{$toInt:{$arrayElemAt:["$dateParts",2]}},data:1}},{$match:{$expr:{$or:[{$lt:["$year",1900]},{$gt:["$year",2022]},{$lt:["$month",1]},{$gt:["$month",12]},{$lt:["$day",1]},{$gt:["$day",31]}]}}},{$project:{f:1,dateP:"$data.v.t.dateP",t:"$data.k"}}])