If you need to know what day of the week it was on November 23, 1963, then this Doctor Who perpetual calendar is right up your alley. You also gain major nerd points if you knew that the date I just mentioned was the date of the airing of the first ever Doctor Who episode.
This complex marvel of calendar engineering, drawn by Russell Walks, can tell the viewer what day of the week it is for any single date in between 1600 and 9999 AD. Since time travel invention is just around the corner, it could be very useful information to know what day of the week it will be 7,500 years from now.
Since a perpetual calendar is something that will most likely appeal to geeks at heart, it only helps that the calendar is accented with portraits of all the various Doctor Who performers over the years.
This Doctor Who Perpetual Calendar Lasts for Thousands of Years
Andrew Sztein — January 30, 2013 — Art & Design
References: russellwalks & neatorama