This can depend on your personal preferences, and on what you are trying to accomplish. For example, partly cloudy weather can add a display of texture to the sky that is ideal for marketing photos, while the softer light near sunrise/sunset can give a different tone to the photo than the full sun in the middle of the day.
Importantly, we can not operate our drones in rainy or foggy weather, or if the wind is too strong or gusty. Conditions such as these will require a reschedule, so you should take into account the possibility of some delays when planning the shoot.
Operations are also restricted to daylight hours, being morning civil sunrise to civil sunset. Basically, if the sun is almost about to climb above the horizon, we can operate from then, until just after is has set below it.