Venus was sacred for the Ancient Mayans. Generations of researchers have been busy probing the question of why the Maya were so obsessed with this planet. Once you know how to unveil their motives, then you stumble upon amazing answers: the numbers of Venus are involved in catastrophes that purified Earth regularly, and in the ones which will do it again.
Among the Ancient Mayans everything was focused on Venus. They kept a sharp eye on our sister planet, noted everything down, and built around it a complex time calculation system that was used for thousands of years.
Ancient Mayan documents showed that other planetary movements could be calculated on the basis of the movement of Venus. Furthermore, it contains moon tables used to calculate possible Solar eclipses, which have been found to be accurate to within just a minimal deviation in relation to the actual values.
The Dresden Codex of the Ancient Mayans also coincided with the extremely important Tzolkin, the cycle of 260 days, which was greatly respected by the Mayans. It was also discovered that they had correct numbers at their disposal, with which they could adjust the first table and reduce the margin of error to one day in 4,500 years.
This also proves that the Ancient Mayans knew alot more than many modern day historians and researchers think.