Is this data annotation correct for date and time?

Hi,
I'm creating models for my ASP.NET Core project. I want to use "Code First" approach to create database and tables. Please check these annotations to be correct:

[Required]
       [DataType(DataType.Date)]
       [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]public DateTime creationDate { get; set; }
       [Required]
       [DataType(DataType.Time)]
       [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:HH:mm:ss}")]public DateTime creationTime { get; set; }

And please tell me that what 0 means inside the curly braces.