無時無刻

无时无刻
shí
  1. (idiom) (when followed by ) at no time; never (Note: 無時無刻不 shí therefore means "at no time not ...", i.e. "at all times".)
  2. (when not followed by ) at all times; always

CEDICT

  1. at all times; anytime
  2. at no time; never

Wiktionary

沒有時刻與否連用時時刻刻隨時意思

重編國語辭典

  1. 沒有時刻
  2. 隨時任何時候無論何時

維基詞典

Entry Composition