Performed before the obligatory (fard) part.
The time for Yatsı begins once the evening twilight (shafaq) disappears and ends at the start of dawn (fajr). Detailed academic discussions, such as the paper titled by Taha Nas, analyze various prophetic narrations regarding its preferred timeframe. Scholars generally agree that while the prayer can be performed until dawn, it is recommended to complete it within the first third or half of the night. How to Perform (Step-by-Step) Yatsi Namazi Namazi
Lean forward saying "Allahu Akbar" and repeat "Subhane Rabbiyel Azim" three times. Performed before the obligatory (fard) part