Hi guys..

We are using the driver in an ETL project that converts dates. I'm a bit puzzled with this behavior.

We inserted this record:

{
	"_id" : "ZRH",
	"id" : "ZRH",
	"name" : "Zürich",
	"population" : 300000,
	"factor" : 0.81191,
	"createDate" : ISODate("1245-04-28T13:27:32.000Z"),
	"createDateString" : ISODate("1984-05-02T00:00:00.000Z"),
	"isGood" : false,
	"countryExtRef" : {
		"ref" : DBRef("Country", "CHE")
	},
	"_loadModifiedData !Screenshot from 2019-06-26 14-34-29.png|thumbnail! " : false,
	"_loadCreatedAt" : ISODate("2019-06-26T12:16:48.524Z"),
	"recordOrigin" : "faker"
},

The problem is with the "createDate" field - as you see it's 1245-04-28T13:27:32.000Z

Later in the application (well, in our integration tests), i fetch the entity back:

Document singleRecord = city.find(eq("_id", "ZRH")).first();

I get this:

So what I see saved in MongoDB is ISODate("1245-04-28T13:27:32.000Z") - I get back "Fri Apr 21 13:27:32 UTC 1245" - somehow 7 days were lost?

Sadly I lack the ability to really diagnostic this problem - I see that the BSON reader gets the value "-23973085975000" in readInt64() for the specific datetime. This indeed is the rendered Date (April 21).. Which is strange as mongo shell shows me April 28 (which is what I inserted)..

Any ideas what could be wrong? Thank you so much!