9pm is quite late these days. A lot of burglarys are done during day when owners are at work. I can only presume they are reaching in the door for keys in the knowledge i am in the house so in that sense time doesnt matter as they are obviously brazen enough!!!
Lots of burglars are very brazen these days. theres been burglarys where people have done total daylight burglarys with a van out front despite members of the public being around. How many people would question what looks like a house move or what looks like a security engineer fiddling with an alarm box etc??