not specifically for the question:
Best Time Of Day To Train: EveningInstead of watching the evening news, go lift. University of Southern Mississippi (Hattiesburg) researchers had 16 males train for 10 weeks either before 10 a.m. or after 6 p.m. Workouts consisted of 45 minutes of weight training followed by 45 minutes of cardio. The evening group increased muscle mass by about 3% more than the morning group and lost about 9% more bodyfat.
Best Time For Cardio: After Lifting Weights
A 2007 University of Tokyo (Japan) study showed that 10 male subjects who performed cardio on a stationary bicycle after a weight workout burned significantly more fat than when they did cardio before weights. This is especially true later in the day; University of Wisconsin-La Crosse researchers found that subjects who did cardio between 5 p.m. and 7 p.m. had a higher resting metabolic rate after the workout than when they trained between 5 a.m. and 7 a.m. or between 21 a.m. and 1 p.m.
Best Cardio Technique For Burning Fat:HIIT
High-intensity interval training (HUT) is a form of cardio that alternates periods of high intensity (like running at 90% MHR) and low intensity (walking at a moderate pace). Numerous studies show that HIIT leads to greater fat loss than the steady-state cardio most guys do at a moderate intensity like walking on the treadmill for 30 minutes at a constant speed.
A study from Laval University (Canada) reported that a 15-week HIIT program led to significantly greater bodyfat loss than a 20-week steady-state endurance program, despite the fact that the latter burned about 15,000 more calories than the HIIT program. The major reason HIIT burns fat so well appears to be due to the greater increase in resting metabolism that subjects experience.
So if you agree with this, doing hiit at night should technically be the best time to do it