I can't able to print today's day by Switch

switch (new Date().getDay()) {

        case 1:

            document.write("its Monday");

            break;

        case 2:

            document.write("its Monday");

            break;

        case 3:

            document.write("its Monday");

            break;

        case 4:

            document.write("its Monday");

            break;

        case 5:

            document.write("its Monday");

            break;

        case 6:

            document.write("its Monday");

            break;

        case 7:

            document.write("its Monday");

            break;

        default:

            document.write("Wrong input please give input between 1 to 7");

    }