Business hours should be determined by what works best to ensure that your customers have easy access to your business at times that suit them. 9:30 a.m. to 5:30 p.m. is what I have seen as the average opening and closing times.
Personally, I am not a fan of businesses closing for lunch, as this is a peak time for customers to come in. Weekends are hit and miss. Many award companies open for half a day on Saturday to catch up and to accommodate pick-up business. Another option is to designate one day a week as a “late” day and maybe stay open until 7 or 8 p.m. that evening for those people who cannot make it any other time.
-Eric Priceman, Victory Awards