After hours refers to the time period outside of usual working hours, which typically includes early mornings, late evenings, and weekends. There are many synonyms for after hours that can be used depending on the context. For example, out of hours, off-hours, and after-work are commonly used for business and work-related activities. Nighttime, midnight, and twilight are synonyms that refer specifically to the hours after the sunset. Late-night, wee hours, and small hours all refer to the late or early hours of the night. Additionally, post-work, evening and weekend hours are commonly used when referring to leisure or recreational activities.