I am from India. I do most of my runs in night mostly because I am not a morning person and I can't wake up before 7am. And there is huge traffic issue after 7am. During night around 11pm, it's traffic free. Only thing to worry about is dogs. I have encountered cops a few times who ask why I am running in middle of the night but if you run over a fixed route then people working in night (in street shops ) get used to that. Also you can easily run without a t shirt (since no one will see you running).
As far as pace is concerned doing slow run is easy in night. Tempo and interval runs are hard (sub 4min/km pace workout) since there is a huge chance of colliding with moving vehicles.