Is duration hours or days?

Duration can be measured in hours, days, or any unit of time depending on context, as duration simply means length of time something lasts, not a specific unit. Duration is a general term for time span, so it can be expressed in seconds, minutes, hours, days, weeks, months, or years, whatever is appropriate for event. For example, duration of a movie might be 2 hours, duration of a work shift might be 8 hours, duration of a vacation might be 7 days, duration of a project might be 3 months, duration of a warranty might be 5 years. In roofing, Owens Corning Duration shingles have name Duration but warranty duration is measured in years, typically limited lifetime with 10 years non-prorated. In physics, duration of event might be milliseconds. In construction, duration of task might be days. In software, duration field might be set in hours or days. So duration is not exclusively hours or days, it is any measure of how long something lasts, and you choose unit based on scale. If someone asks is duration hours or days, answer is it can be either, or both, depending on what you measure. For short events like meetings, duration is usually hours, for longer events like projects, duration is days or months. In common usage, duration is often expressed in hours for daily activities and days for longer periods.