on one's own time

: used to express immediate or direct kinship

:  to have or hold as property :  possess

:  to have power or mastery over

:  to acknowledge to be true, valid, or as claimed :  admit

:  the measured or measurable period during which an action, process, or condition exists or continues :  duration

:  a nonspatial continuum that is measured in terms of events which succeed one another from past through present to future

:  leisure

:  to arrange or set the time of :  schedule

:  to regulate (a watch) to keep correct time

:  to set the tempo, speed, or duration of

:  of or relating to time

:  recording time

:  timed to ignite or explode at a specific moment