Can Tello fly during the night, or will it drift away?

Dear customer,
Please do not fly at night, weak light, reflective surface, repeated patterns and other improper environmental factors will make the VPS disable, causing the drone switching into ATTI mode, that cannot hover in place and has a horizental drifting.
Please read the manuals on RYZE official website to know more information about the drone and flight environment requirements.
https://www.ryzerobotics.com/tello/downloads

Not advisable