Venice by British artistic<unk>  Stephen Wiltshire<unk>  skills are usually found in one or more of five major areas: art, memory, arithmetic, musical abilities, and spatial skills. The most common kinds of<unk> s are calendrical<unk> s, "human calendars" who can calculate the day of the week for any given date with speed and accuracy, or recall personal memories from any given date. Advanced memory is the key "superpower" in<unk>  abilities. Approximately half of<unk> s are autistic; the other half often have some form of central nervous system injury or disease. It is estimated that up to 10% of those with autism have some form of<unk>  abilities. Calendrical<unk> s A (or ) is someone who – despite having an intellectual disability – can name the day of the week of a date, or vice versa, on a limited range of decades or certain millennia. The rarity of human calendar calculators is possibly due to the lack of motivation to develop such skills among the general population, although mathematicians have developed formulas that allow them to obtain similar skills. Calendrical<unk> s, on the other hand, may not be prone to invest in socially engaging skills.
Savant syndrome
McGillivray syndrome
Witteveen–Kolk syndrome
Antley–Bixler syndrome
Gourmand syndrome
Havana syndrome
Zechi-Ceide syndrome
Bruck syndrome