Since very remote time Men depended on animal emigrations for hunting and later on seasons for cultivation, all human inhabitant of this planet has been looking towards the sky for the movements of the heavenly bodies to be able to measure time, the Moon probably was the principal one as it is frequent and has different phases is understandable that it played a principal roll for this purpose.

Nevertheless the moon rotation doesn’t coincide exactly with the earth rotation cycles but in ancient times is doubtful that they new that the earth rotates around the sun, however since Earth earth movement can be perceived by the apparent sun movements in the sky, the Sun was used to precise time more efficiently.

Ancient sky observers as they discover that the sun sets an rises in different places in winter and summer, they work out a system of columns to signal this events. By the time that Chanquillo or Chankillo was built close to the actual city of Casma in northern Peru they had develop a very sophisticated system made of 13 columns to be able to precise exat dates during the year.

The axis angle that planet Earth has today never was the same, oscillate between 22.1 and 24.5 during periods of many thousand years; if this angle increase or decrease come extreme cold or warmer periods of great upheaval; moreover there had been also a greater changes by the inversion of earth polarity as the earth north polarities switches to the south as have occurred in 100,000th years period with the outcome of great catastrophes; therefore its use was beyond their normal calendar uses as it also was a mean to advent great radical earth weather changes and cataclysms; a sufficient reason why they pay extreme attention to the solstices that will indicate those changes, this moment was of great dread and a moment to perform ceremonies to avoid a bad outcome, after the even were bursts of celebration and great joy when they sighted the sun returned to its path, a pagan costume that today is know by New Years celebration whose origins are lost in the roots of time.