I create a new collection with Mongo Compass and preconfigure the collection to be a time series collection. I select my column timedate as timefield and pick second as granularity and leave metafield and expire after seconds empty.
I sometimes get dates show up like 1978-01 and 1-10 and a random time.
any ideas as to why this happens for several million records
example record
Borough,ID,LinkId,LinkPoints,Link_Name,Owner,Speed,TravelTime,timedate
Manhattan,4,4616338,"40.7607,-74.002141 40.76212,-74.91 40.76335,-73.999271 40.76491,-73.99805 40.7667406,-73.996681 40.7693,-73.994801 40.7699605,-73.994521 40.7710104,-73.99438 40.7715106,-73.9942",12th Ave N 40th - 57th St,NYC_DOT_LIC,8.07,382,2019-01-11T18:03:31.000Z