Related Clues:

• When many a "Closed" sign is flipped
• When some shifts start
• Workday start, for some
• Certain shift start
• When the day shift might start
• Common starting hr.
• Opening hour, often
• Typical timecard figure
• Frequent day-shift start
• When many clocks are punched
• Common workday starting hr
• Hr. when many businesses open
• Time to flip the sign, perhaps
• Common retail starting hr
• Time when many stores open