Question: What happens if you have “calendar synesthesia”?
Answer: You can literally see time as a collection of points in space, perhaps in interlocking regions around the body, or an enormous hula hoop, and any number of other strange, highly personalized visual manifestations. People with this condition often don’t need personal planners; they “see” the calendar, or perhaps the time of day, arrayed around them. For example, December could be on your right, and July about three feet in front. It’s believed that about 1 in 50 people have this strange form of synesthesia. You can read more at the link above.