Apparently, there were hundred+ drone pilots available who were spread across several timezones should the AI not be able to find their way visually. If you see some of the streaming video snippets, it says GPS fix unavailable likely due to jamming of GNSS systems and disabling of civilian GLONASS near bases. As such, Russian domestic cell carriers were reportedly used to stream video and for manual terminal guidance following visual cues, hence the daylight timing of the raid.