How to compare arrays and datagridview through loops?

Question

Good afternoon, everyone

I have 7 text boxes that I made this way

long[] Jornada;
Jornada = new long[7];

           Jornada[0] = TimeSpan.Parse(textboxjornadaseg.Text.ToString()).Ticks;
           Jornada[1]= TimeSpan.Parse(textboxjornadater.Text.ToString()).Ticks;
           Jornada[2] = TimeSpan.Parse(textboxjornadaqua.Text.ToString()).Ticks;
           Jornada[3] = TimeSpan.Parse(textboxjornadaqui.Text.ToString()).Ticks;
           Jornada[4] = TimeSpan.Parse(textboxjornadasex.Text.ToString()).Ticks;
           Jornada[5] = TimeSpan.Parse(textboxjornadasab.Text.ToString()).Ticks;
           Jornada[6] = TimeSpan.Parse(textboxjornadadom.Text.ToString()).Ticks;

each journey is a maskedtexbox referring to the total contractual journey of the day, I have a calculate button in which it fills a line and plays this content in a grid cell.

What I did : I put a FOR for him to take the 7 conditions and put in a variable : Jornada[i]

 for (long i = 0; i < 1; i++)

           {

            IdentificaHoraExtra = HorasDoDia + HorasDaNoite > Jornada[i]; //verifica se há horas extras
            ResultadoHE = IdentificaHoraExtra ? (HorasDoDia + HorasDaNoite) - Jornada[i] : (new TimeSpan(0).Ticks)
            }

By clicking it generates a line in datagridview, this Journey[i] is a contractual journey field.

What I want to do: on the grid it has a column called "day", then it takes the day of the week : "Monday"/ "Tuesday" / [...] and so on, each insert in the line it adds the next day, i wanted to find a way in which he compared the day cell with the corresponding vector and returned the vector identification equal to the day position on the line.

for example: in datagridview appeared a cell written "second"/ second he takes Journey[0], on Tuesday he takes the Journey1

Does anyone have any hint as I compare the index of the in cell that appears the day with the index that I created in the array?

Edit will put prints for easy viewing

In the first image above in the workday field it returns the values of the textbox.

In this second image in the left-hand textbox are the values that are inserted in the dategridview

In the field of journey was to show the value of Friday which is 08:00 Only he takes Monday every time I wanted to find a way to identify the content of the day for each value in these textbox.