>>927
こんなんじゃ使い物にならないな

date = new Date('2018/06/01 01:02:03')

date.toLocaleTimeString( 'en', { hour12: false } )
// "?1?:?02?:?03"

date.toLocaleTimeString( 'en', { minute: '2-digit', second: '2-digit', hour12: false } )
// "?6?/?1?/?2018? ?1?:?02?:?03? ?AM"