Generar un horario de clases

<table>
    <thead>
        <tr>
            <th>Horas</th>
            <th>Lunes</th>
            <th>Martes</th>
            <th>Miercoles</th>
            <th>Jueves</th>
            <th>Viernes</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>8:30 - 9:20</td>
            <td></td>
            <td>Programacion I</td>
            <td></td>
            <td>Programacion II</td>
            <td></td>
        </tr>
        <tr>
            <td>9:20 - 10:10</td>
            <td></td>
            <td>Programacion I</td>
            <td></td>
            <td>Programacion II</td>
            <td></td>
        </tr>
        <tr>
            <td>10:10 - 11: