plural of clock hour

plural of light hour

The regular times of day when a shop, office or similar is open to the public.

The times, typically from about 9am to 5pm, Monday to Friday, when non-24/7 office workers are at their desks.

The number of credit hours a student takes in a semester, usually for a college or university to count towards a degree.

plural of canonical hour.

The fixed block of time during which an employee is expected to be at work; excludes flexitime and leave.

The very early morning, just after midnight, when most people are asleep.

The very early morning; the early morning hours; the nighttime hours following midnight, when most people are asleep.

plural of zero hour