Unusual Interests: Calendar Calculation and More #AtoZChallenge

Welcome to day 21 in the #AtoZChallenge. Today, I will be writing about my unusual interests. You see, like many autistic people, I tend to have interests that are intense and unusual in focus.

As a child, I was advanced for my age in math. When I was around six, my father taught me to do square and squareroot calculations. He used a set of squares (which were really computer chips) to teach me, laying three in one row and then squaring it to nine. I loved this.

When I was eight and the kids in my class were doing multiplication tables, this would be boring to me, as I had all tables from one to twelve memorized already. To make the activity useful for me anyway, I chose to start with the table of nineteen. Don’t ask me why I skipped thirteen to eighteen, but I did.

When I was a bit older still, I taught myself to do calendar calculation. Most people not familiar with autism I encounter have never even heard of that skill, which is a common savant skill in autistics. It involves calculating on what day a certain date falls. Usually, this skill is presumed to be memory-based, but I actually knew the rules for doing it. I also learned about the change from Julian to Gregorian calendar in 1582 and took those ten days that were skipped into account when working with dates before then. I have a newspaper article from late 1999, which I still treasure, titled something like “the fight about time” in Dutch. It explained why the year 4000, unlike other centennial years divisible by 400, shouldn’t be a leap year. How fascinating!

Later, I developed other “unusual” special interests. For example, I used to draw maps when I was around ten or eleven. I always drew Italy, though I knew a lot about topography in general.

When I was in the psychiatric hospital and touring potential supported housing places, I had no idea about their location, except which trains and buses to use to get there. I wasn’t as good with topography anymore. I at one point had most bus routes in my province memorized from Wikipedia.