MongoDB is one of the popular NoSQL databases available today. You can use MongoDB database in your ASP.NET Core applications using MongoDB.Driver NuGet package. I discussed the basics of MongoDB including CRUD operations here and here. Document databases such as MongoDB store data as JSON documents. Although JSON supports basic data types such as string, number, and boolean JSON doesn't support DateTime. So, date-time values are stored as string. In this article we will discuss a few things that you need to take into account while storing date-time values.