What time is Du'a accepted?

السلام عليكم

بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ

Rasululiah (صلى الله عليه و سلم ) was asked: O Rasululiah! At what time is Du'a the most readily listened to and accepted?

He (صلى الله عليه و سلم ) replied: The one made during the course of latter part of the night, and after the obligatory Salat.

[Tirmidhi]