Why is it that people ask really stupid questions without actually thinking about it first?
Very often, people ring my office and ask when we hold advice surgeries. So I respond:
"The first Saturday of each month, at 10:30", and the dimwits say "Is that in the morning?"
or "The third Friday of each month, at 4.30", and the dimwits say "Is that in the afternoon?"
Of course not! We work 24 hours a day, 7 days a week. Work it out, stupid!