Why have lights on, other security lights, when there is nobody around to see them? There is also a cost, both monetary and to wildlife. Outdoor artificial light badly disrupts the natural world. https://www.rhs.org.uk/wildlife/garden-lighting-effects-on-wildlife

Ditto. Limit night time lights please for the wildlife.

We have ours on from dusk until bedtime, 10 PM.
Much better for the local wildlife and the environment- less electricity that the electric company has to produce at all.
Also, our Kichler led lights, which were sold as lasting forever, have been a major disappointment in terms of longevity. We replaced many that had burned out while still under warranty - so very few hours of life-and afterwards slowly replaced every fixture at least once, some now twice. At several hundred dollars apiece it has been maddening.

We keep all our lights off after dark once insects are out and about. Not only is it bad for critters, it is not good for plants (trees included there).

Thank you for your replies and advice. Much appreciated.

Porch light, carport, and one yard light are on dusk to dawn. Landscape lights (low voltage) are on from dusk to ten.

If you follow Dark Sky principles for outdoor lighting, the answer is no because the lighting will serve no purpose.

https://darksky.org

No lights on dusk to dawn. We used to keep front porch light on to keep bat away from resting right above our front door and leaving a mess but solved that another way. My neighbor is a different story. Bright flood lights and recessed lights on until the wee hours of the morning.

Our local police also recommend illuminating ones home overnight as a safety precaution. There is a brazen burglary ring in my area that is not deterred by security cameras or alarms. They break a window, take what they can and leave before police arrive.

How about motion activated? set up so the motion sensors are set that they cross each others fields of activation. That’d get the glow going, but not be on all night.

@taliaferro: "There is a brazen burglary ring in my area that is not deterred by security cameras or alarms."

Are they deterred by outdoor lighting? Do the police actually know that such lighting deters burglars? What about motion sensors vs. just leaving the lights on? Do the criminals burglarize houses during the daytime? Do they check whether people are at home before burglarizing?

@wdccruise: “Do they check whether people are at home before burglarizing?”

I’m sure they knock before busting the window.

Actually, the current m.o. of the S. American burglars is to wait/watch until the residents are not home, and they scout for homes that appear empty. There is burglar activity all over down here (San Diego). Police are attending HOA meetings, our city has 140 license plate readers, and arrests often attributed to these LPRs, glass glass-break alarms, and watchful neighbors with security cams. The cameras are how police come to know the m.o. of the burglars peering in windows, but avoiding homes with signs of activity or lights. Thats why they are recommending leaving some lights on and/or making it appear residents are home.

So the best solution may be to purchase a few inside smart bulbs/switches/outlets and program them to turn on an off to give the appearance that you're home when you're not and for outside to use motion sensors to provide illumination only when needed. (In DC, there were 1,092 reported burglaries in 2003 and one can imagine how many burglaries go unreported...such as when my bicycle was stolen in broad daylight from a garage I'd walked away from for a few minutes to haul a few things to the dumpster).