[{"_id":{"$oid":"66c0cf6dec822937b21df7bd"},"end":{"$date":"2024-01-01T00:00:00.000Z"},"start":{"$date":"2022-12-31T23:59:59.000Z"}},{"_id":{"$oid":"66c0cf6dec822937b21df7be"},"end":{"$date":"2024-01-01T00:00:01.000Z"},"start":{"$date":"2023-01-01T00:00:00.000Z"}}]

db.collection.aggregate([{$project:{seconds:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"second"}},minutes:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"minute"}},hours:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"hour"}},days:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"day"}},years:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"year"}},months:{$dateDiff:{startDate:"$start",endDate:"$end",unit:"month"}}}}])