The task takes experimentation, and time. Perhaps this is what you have in mind...
Calendar_test.mp4
For contrast, a sepia effect was added to the track 1 calendar.
The original white calendar was cropped in a graphic program to show only the '12' square, which then was overlaid on VP track 2.
The MOTION effect scaled and positioned the cropped square to overlay its calendar square. A keyframe was created by clicking the small green + on the toolbar.
The red cursor was dragged a graph square to the right. Another keyframe was added, duplicating the first This is where motion begins.
The red cursor was then dragged far right. Scale and position adjustments were made to position the '12' square to cover the entire calendar.
A saturation effect was added, initially set to zero opacity.
The cursor was moved to where movement begins and another transparency keyframe was set by clicking the small green + sign. This is the '12' fade-in point.
The cursor was moved to the end of the clip and transparent opacity was set to 100%.
Back up frequently, for protection, by using Save AS, and giving it a unique # or name, so as to not overwrite prior saves. If Save is simply clicked, it will overwrite.
Without the sepia effect, and with a black border added to the bin clip prior to dropping it on the timeline, the project looks like this.
Calendar_white.mp4
