Knowing the Decline of the Sun

تَزُولُ الشَّمْسُ فِي النِّصْفِ مِنْ حَزِيرَانَ عَلَى نِصْفِ قَدَمٍ وَ فِي النِّصْفِ مِنْ تَمُّوزَ عَلَى قَدَمٍ وَ نِصْفٍ وَ فِي النِّصْفِ مِنْ آبَ عَلَى قَدَمَيْنِ وَ نِصْفٍ وَ فِي النِّصْفِ مِنْ أَيْلُولَ عَلَى ثَلَاثَةِ أَقْدَامٍ وَ نِصْفٍ وَ فِي النِّصْفِ مِنْ تِشْرِينَ الْأَوَّلِ عَلَى خَمْسَةٍ وَ نِصْفٍ وَ فِي النِّصْفِ مِنْ تِشْرِينَ الْآخِرِ عَلَى سَبْعَةٍ وَ نِصْفٍ وَ فِي النِّصْفِ مِنْ كَانُونَ الْأَوَّلِ ع

Hadith.673 - Abdullah ibn Sinan narrated from Imam Jafar ibn Muhammad Al-Sadiq (as) that He said: "The sun moves (its position) in the middle of the month of Haziran (June) by half a foot; In the middle of the month of Tammuz (July) by one and a half feet; In the middle of the month of Ab (August) by two and a half fee

تِبْيَانُ زَوَالِ الشَّمْسِ أَنْ تَأْخُذَ عُوداً طُولُهُ ذِرَاعٌ وَ أَرْبَعُ أَصَابِعَ[2] فَتَجْعَلَ أَرْبَعَ أَصَابِعَ فِي الْأَرْضِ فَإِذَا نَقَصَ الظِّلُّ حَتَّى يَبْلُغَ غَايَتَهُ ثُمَّ زَادَ فَقَدْ زَالَتِ الشَّمْسُ وَ تُفَتَّحُ أَبْوَابُ السَّمَاءِ وَ تَهُبُّ الرِّيَاحُ وَ تُقْضَى الْحَوَائِجُ الْعِظَامُ

Hadith.674 - Imam Jafar ibn Muhammad Al-Sadiq (as) said: "The indication of the sun's zenith (midday) is to take a stick that is one cubit and four fingers in length and place four fingers into the ground (embedding the stick partially). When the shadow shortens to its minimum point and then begins to lengthen, the sun