I am new to MongoDB. May I know the difference between Date and TimeStamp commands in the example?

example:

db.collection.find({
  DateAdded: {
    $gt: ISODate("2020-09-18T21:07:42.313+00:00"),
    $lt: ISODate("2020-09-19T21:08:42.313+00:00")
  }
})