How can I save new Date() in MongoDB?

To save new Date() in MongoDB, you can use new ISODate(). Let us create a collection with documents −

> db.saveDateDemo.insertOne({"UserName":"John","UserLoginDatetime":new ISODate('2018-01-31 12:34:56')}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cbd67d4de8cc557214c0e04") } > db.saveDateDemo.insertOne({"UserName":"John","UserLoginDatetime":new ISODate('2019-02-01 04:01:10')}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cbd67e8de8cc557214c0e05") } > db.saveDateDemo.insertOne({"UserName":"John","UserLoginDatetime":new ISODate('2019-04-22 12:36:45')}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cbd6805de8cc557214c0e06") }

Display all documents from a collection with the help of find() method −

> db.saveDateDemo.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5cbd67d4de8cc557214c0e04"),    "UserName" : "John",    "UserLoginDatetime" : ISODate("2018-01-31T12:34:56Z") } {    "_id" : ObjectId("5cbd67e8de8cc557214c0e05"),    "UserName" : "John",    "UserLoginDatetime" : ISODate("2019-02-01T04:01:10Z") } {    "_id" : ObjectId("5cbd6805de8cc557214c0e06"),    "UserName" : "John",    "UserLoginDatetime" : ISODate("2019-04-22T12:36:45Z") }