Doomsday
The Day of the Week Party Trick
Name the day of the week for any date in history — instantly, in your head. Doomsday teaches you the algorithm step by step, then drills you until it's second nature. Impress anyone. Stump everyone.
The Day of the Week Party Trick
Name the day of the week for any date in history — instantly, in your head. Doomsday teaches you the algorithm step by step, then drills you until it's second nature. Impress anyone. Stump everyone.