time on

Serving a sentence

Time on refers to accumulated duration spent in a particular state or activity: time on task, time on target, time on the job.

In broadcasting and advertising, time on means the moment when something begins airing or the duration of airtime.

Military and technical contexts use it for when systems become active or operations commence.

Related

interval · minute · hour · chronology · schedule · moment · span · pacing · involvement · participation · mark · engagement · focus · periodicity · segment · allocation · output · epoch

Opposites
engagement/activity

time ontime off

Scheduled absence from duties

downtime · break · rest period · idle time · leave

constraint/freedom

time ontime off

Scheduled absence from duties

free time · leisure time · downtime · off-duty · freedom

CLOCK STATUS (sports/work)

time ontime out

Temporary stop in action

stoppage time · dead time · timeout · whistle

Family

timeout

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G