fast_med_app/lib/routes/home.dart

           children: [
             newButton(context,'/verOficinas','Ver Oficinas'),
             spaceBetween(),
-            newButton(context,'/calendario','Calendario'),
-            spaceBetween(),
             newButton(context,'/especialidades','especialidades'),
             spaceBetween(),
             newButton(context,'/translation','translation'),

fast_med_app/lib/routes/ver_oficina.dart

                     children: <Widget>[
                       TextButton(
                         child: const Text('Buscar Disponibilidad'),
-                        onPressed: () { /* ... */ },
+                        onPressed: () {
+                          Navigator.pushNamed(context, '/calendario');
+                        },
                       ),
                       const SizedBox(width: 8),
                     ],