using System;

​

public class Program

{

    public static void Main()

    {

        long timeStampFrom = 1594027534; // Monday, July 6, 2020 9:25:34 AM

        long timeStampTo = 1594113934; // Tuesday, July 7, 2020 9:25:34 AM

        var dateFrom = UnixTimeToDateTime(timeStampFrom);

        var dateTo = UnixTimeToDateTime(timeStampTo);

        string collectionFromName = dateFrom.ToString("dd/MM/yyyy");

        string collectionFromTo = dateFrom.ToString("dd/MM/yyyy");

    }

​

    public static DateTime UnixTimeToDateTime(long unixtime)

    {

        DateTime sTime = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);

        return sTime.AddSeconds(unixtime);

    }

}