Turn your diagram upside (with the Sun appearing on the left side). What do you notice about the location of the phases of the moon now that the sunlight is coming from a different side?
To understand the changes in the location of the phases of the moon when the sunlight is coming from a different side, let's start with a basic diagram of the phases of the moon.
Typically, when we draw the phases of the moon, we have the Sun on the right side, the Earth in the center, and the Moon in different positions around the Earth. The illuminated portion of the Moon is represented by shading, indicating the phase it is in at that specific time.
Now, let's turn the diagram upside down, so the Sun appears on the left side. This change in orientation implies that the sunlight is now coming from a different side compared to the standard diagram. Consequently, the changes in the location of the phases of the moon will occur accordingly.
In the reversed diagram, we will notice that the positions of the phases of the moon have shifted. For example, what used to be a "New Moon" will now appear as a "Full Moon" and vice versa. This is because the illumination is coming from the opposite direction, making the illuminated side of the moon face the other way.
It's important to note that the underlying astronomical phenomenon hasn't changed; only the orientation of the diagram has been altered. The phases of the moon occur due to the relative positions of the Earth, Moon, and Sun, and as a result of the Moon reflecting sunlight towards the Earth.
So, by reversing the diagram and positioning the Sun on the left side, we observe a change in the locations of the moon phases, reflecting the altered direction of sunlight.