Calendar block

The calendar block is a block which function simultaneously as an alternative to a clock and an enchantment table. The calendar block has the appearance of an Aztec stone calendar on all sides. When right clicked, it will open up a gui, showing the time, weather, moon cycle and dimension, as well as slots giving the user access to the day sign function.

Day signs
day signs are a functionality giving users a random enchantment every day. The day signs are a combination of a range of 20 different symbols and a range of 13 numbers. The symbols each offer a specific enchantment and the numbers are either lucky or unlucky. Lucky numbers will give higher enchantment numbers while unlucky numbers will give lower enchantment numbers or even curses.

To use the day sign enchantment, the user must place a cobblestone block in the insert slot of the calendar block, which will give the user a day sign item with the specific enchantments.

Cultural background
The Aztecs relied on an a set of two calendars, xiuhpōhualli and tōnalpōhualli. Xiuhpōhualli was civil calendar of 365 days, divided in 18 months of twenty days. This ended the year with 5 extra void days which were considered unlucky. This calendar relied on the rotation of the sun, and as such was considered an agricultural calendar. It was also used to set dates for taxes and tribute collection, and as such, the Mexica people would impose it on conquered people so they could meet deadlines for tributes. Tōnalpōhualli on the other hand was a religious calendar. It had 260 days, divided in 20 months of 13 days, which meant that both calendars would align every 52 years. No one is sure what this calendar was based on, as it didn't seem to align with any astronomical body. This calendar was used for religious ceremonies. The 20 months were called signs, and combined with the 13 numbers gave a unique combination of sign and number which had a religious connotation, like a sort of horoscope. These day signs determined the fate of those born under them, and also determined what that day should be better off spent, giving blessings and good luck for certain tasks, and bad luck for others.

These two calendars were not unique to the Aztecs, they seemed to originate from an ancient mesoamerican civilization which predates the Aztecs and the Maya. They were widely used throughout meso-america, but of course, each people had different names and connotations for each months, but the overall concept and functionality stayed the same. The Maya called the civil calendar Haabʼ, and the religious tzolkʼin.

As for the Maya, they had a third calendar unique to them, infamous for its association with the 2012 scare. This was called the long count calendar, and measured days on a grand cosmic scale spanning thousands of years. In fact, the long count calendar measured what the Maya perceived as this world's life. The long count calendar started at the point in time which the Maya believed to be the creation of the world, and ended at the point considered as the end of the world.