Database
[{"registerDate":ISODate("2021-06-11T06:52:53.915Z")}]
Query
db.collection.aggregate([{$match:{$expr:{$and:[{$gte:["$registerDate",{$toDate:"2021-02-28T21:00:00Z"}]},{$lt:["$registerDate",{$toDate:"2021-10-31T21:00:00Z"}]}]}}}])