1600000000000を向かえる準備

happy-new-epoc.js

function start() {
  let nextEpoc = (Math.floor(Date.now() / 100000000000) + 1) * 100000000000
  console.log('next epoc:', nextEpoc)
  waitNextEpoc(nextEpoc)
}

function waitNextEpoc(nextEpoc) {
  let now = Date.now()
  let sleepTime = (nextEpoc - now) / 10

  if (sleepTime < 100000) {
    console.log(now)
  }
  else if (sleepTime > 24 * 60 * 60 * 1000) {
    console.log('good night!')
  }

  if (sleepTime <= 10) {
    while(Date.now() < nextEpoc);
    console.log('happy new epoc!', nextEpoc)
    start()
  }
  else {
   setTimeout(() => waitNextEpoc(nextEpoc), sleepTime)
  }
}