It was rarely that the Messenger of Allah ﷺ set out on a journey on any day but on a Thursday. (Using translation from Abū Dāʾūd 2605)   

«لَقَلَّمَا كَانَ رَسُولُ اللَّهِ ﷺ يَخْرُجُ إِذَا أَرَادَ سَفَرًا إِلَّا يَوْمَ الْخَمِيسِ»