During the spring summer and fall, the latest I have recived a phone call was about 10:30. During the winter when its snowing I will answer the phone if I am not busy. I have signed customers up for driveway snow blwoing at 2, 3:30 5am in the morning. It don't bother me none because I am usually awake keeping tabs on the storm. During the mowing season, my phones are on from 6:30am-8:00pm. Sometimes, i will let the voice mail get the call but if I'm awake and not busy doing something, I will answer. I hate answering calls for estimates though when I am driving. It seems everytime I do that, the customer lives 30 miles east of West Jabip and I end up having to pull over and jot a ton of directions down.