parallel to plumb line 640 that is collecting slots 636 should be located on that portion of the collecting surface that is curving back toward plumb line 640 and away from the building rain gutter cover 600 is able to eject almost all debris from the system because rain a film of water can easily navigate folded angular edge 624 but the debris absolutely cannot make the sharp turn at folded angular edge 624 and is completely ejected from the system because collecting slots 632 are covered by mounting flange 620 even falling debris can not invade conventional gutter 15 it should be noted that it is possible to place any combination of the diverting and collecting openings present in rain gutters 10 and 200 shown in fig1 and fig2 respectively on an inwardly curved collecting surface such as surface 430 of rain gutter 400 shown in fig4 or surface 530 of rain gutter 500 shown in fig5 it should also be noted that any one of the configurations shown can be adapted to define a cover that can be added to a conventional gutter as is the case with gutter cover 600 shown in fig6 and fig6 a fig7 illustrates rain gutter cover 700 which is a seventh embodiment of the present invention rain gutter cover 700 is not a complete gutter system but rather it is a cover that can be placed over a conventional gutter such as gutter.