オンタイム

noun

on time; punctual

Refers to being punctual or happening at the scheduled time. Often used in business or event contexts.

• 会かい議ぎはオンタイムで始はじまった。

  The meeting started on time.

noun

work hours; time on duty

Used in contrast with オフタイム (off-duty time). Common in workplace or shift-work contexts.

See also: オフタイム

• オンタイム中ちゅうは携けい帯たい電でん話わの使し用ようを控ひかえてください。

  Please refrain from using your mobile phone during work hours.

noun

real time; live

Often considered incorrect usage; リアルタイム is the standard term. Still encountered in casual contexts for watching or experiencing something live.

See also: リアルタイム

• その試し合あいをオンタイムで見みたかったけど、仕し事ごとで見みられなかった。

  I wanted to watch the game live, but I couldn't because of work.