Actually I had thought about adding a dashed line with an arrow indicating the direction of the sun, but I felt like even the village idiot would be able to figure out the path of the sun from morning to night, especially considering the shades of the sky. Of course, I'm a bit biased.
epwc, yes, it is Ramadan so everyone should be fasting. I can't see how that would keep anyone from taking medication. Even if they didn't take meds during Ramadan, they could keep them to take in about 15 days or so. And like you, I don't know of any symbols for morning, evening, or night (other than the 'universal' ones on the card).