A perpetual calendar can be adjusted to show any combination of day, month, and year which is therefore usable year after year without it being thrown away. It is also a set of tables from which the day of the week can be reckoned for any date.
Thursday For a perpetual calendar and how to work it see the link below.
There is no answer to your question because a perpetual motion machine is impossible. If one could be built, its own motion would be considered work.
A calendar at your work, for your work, that has your work schedule on it, etc.
There are only seven possible monthly calendars; i.e., only seven possibilities for what day of the week a month starts on. All you need is a set of seven calendar pages, and a chart that tells you which one to use depending on the particular year and month you want.
A perpetual calendar is designed to accurately track the date across multiple years, accounting for leap years and varying month lengths. It uses a combination of gears and mechanisms to calculate days, months, and years, adjusting for the irregularities in the Gregorian calendar. By incorporating leap years every four years, except for years divisible by 100 but not by 400, it ensures precise date representation over long periods. This allows it to display the correct date without needing manual adjustments.
Perpetual motion.
Unless your "everyday life" involves work in some area of engineering, you won't use matrices in your everyday life.
it depends on what you use to build it
Perpetual motion would only work in a perfect environment - perfect vacuum - zero friction, zero resistance. The best we can hope for is to minimize the input energy - increase efficiency...
it is a mystery. i cbf to answer you
The first law might allow a perpetual energy machine where energy is extracted from the surroundings to power the machine, but the second law explains why such a perpetual motion machine won't actually be able to work.
1984 was the last year that had the same calendar as 2012.