A calendar with a radial layout is used for the months with the days of the week in the center. I implemented alchemy, the forerunner of chemistry and natural philosophy. It is primarily concerned with the transmutation of materials and is imbued with spiritual significance, symbolism, and allegorical meaning. The four classic elements correspond to seasons and the seven planetary metals to days of the week. These are integrated with the twelve zodiac signs. The different traits allow for inference about upcoming weeks, months, and seasons.​​​​​​​