It is with the movement of the sun that ...
It is with the movement of the sun that :t year is complete and a correct estimate of time is established. Just see how the sun sheds its light on the world and with what ingenuity has this been ordained for it. If it shone only at one spot of the Zodiac constantly, without changing its place, the benefits of its rays would not penetrate in all direction due to the interpolation of mountains and walls.
It has, therefore, been so patterned that it rises from the East in the forenoon, shedding its light on objects opposite in the West, to move on constantly, extending its light from side to side till it goes on to the West to shed its light on objects which failed to received it in the forenoon, so as not to allow any corner to remain without the benefit and purpose, it is meant to serve.
If for a whole or a part of the year the situation changed to the contrary, you can imagine the plight of human beings. In fact what chance would they have to survive at all? Does not man observe such magnificent planning, wherein his own schemes would utterly fail? They function automatically without negligence, nor do they lag behind the time regulated for the management of the world's organisation and maintenance.
The Moon There is a sign revealed by the Almighty Allah in the creation of the moon - a fine indication. People in general calculate months on its basis, but the year is not correctly established by it. Its motion does not comprehend the changes of season nor the times of the blossoming and the ripening of the crops. That is why lunar months and years differ from solar months and years. The lunar months change, so that sometimes the same month has reference to the summer and sometimes to winter.
So is the case with other months. For example, the month of Muharram may occupy a period in summer sometimes, in the rainy season at other times and in winter at yet another time. This shows that the lunar and solar months continue to change and do not correspond to each other. Consider why the moon shines at night and the ingenuity underlying it. The living beings need coolness born of darkness in order to get rest and comfort.
Complete absence of light and pitch darkness would not have any merit, anyhow, without the possibility for work of any kind. Men need to undertake some work for want of leisure during the day. It may be that due to extremes of heat, he may work in the glimmer of the moon, for example, agriculture, milking. wood cutting etc.