[{timestamp:ISODate("2024-11-23T00:06:00.000Z")},{timestamp:ISODate("2024-11-24T00:06:00.000Z")},{timestamp:ISODate("2024-11-25T00:06:00.000Z")},{timestamp:ISODate("2024-11-26T00:06:00.000Z")},{timestamp:ISODate("2024-11-27T00:06:00.000Z")},{timestamp:ISODate("2024-11-28T00:06:00.000Z")},{timestamp:ISODate("2024-11-29T00:06:00.000Z")},{timestamp:ISODate("2024-11-30T00:06:00.000Z")},{timestamp:ISODate("2024-12-01T00:06:00.000Z")},{timestamp:ISODate("2024-12-02T00:06:00.000Z")},{timestamp:ISODate("2024-12-03T00:06:00.000Z")},{timestamp:ISODate("2024-12-04T00:06:00.000Z")},{timestamp:ISODate("2024-12-05T00:06:00.000Z")},{timestamp:ISODate("2024-12-06T00:06:00.000Z")},{timestamp:ISODate("2024-12-07T00:06:00.000Z")},{timestamp:ISODate("2024-12-07T00:00:00.000Z")}]

db.collection.aggregate([{"$match":{"timestamp":{"$lte":{"$date":"2024-12-07"},"$gte":{"$date":"2024-12-01"}}}},{"$group":{"_id":{"timestamp":{"$dateTrunc":{"date":"$timestamp","unit":"month"}}},count:{$sum:1}}},{$set:{timestamp:"$_id.timestamp"}},{"$sort":{timestamp:1}}])