The Egyptian world
The Nile and its inundation were basic to the Egyptian world-view. Unlike most peoples, the Egyptians oriented towards the south, from which the river came, so that the west was on their right - with the result that it was the 'good' side for passage into the next world. The year and calendar were adjusted to the Nile and the stars. New Year was in mid July, when the river began to rise for the inundation; this coincided approximately with the reappearance of the star Sirius (Egyptian sothis ) in the sky after 70 days' invisibility. Sothis provided the astronomical anchor for the 365 day calendar. The river defined three seasons of four months: 'Inundation' and 'Emergence' (November-March) when the land reappeared and could be cultivated, and 'Heat' or Harvest, when crops were gathered and the water was lowest.