Find fork slot and timestamp for a network with Gnosis preset and some time conditions

slot_finder_gnosis.mjs

// Usage
// node slot_finder.mjs chiado

const genesisTimestamp = getGenesis();
const interval = 8192 * 5;

const now = Math.floor(Date.now() / 1000);
const futureDate = new Date();
futureDate.setMonth(futureDate.getMonth() + 2);
const futureTimestamp = Math.floor(futureDate.getTime() / 1000);

const elapsedIntervals = Math.floor((now - genesisTimestamp) / interval);
const firstFutureInterval = elapsedIntervals + 1;
const intervalsToFuture = Math.floor((futureTimestamp - now) / interval);

function isWeekday(date) {
  const day = date.getUTCDay();
  return day >= 1 && day <= 5;
}

function isWithinTimeRange(date) {
  const hours = date.getUTCHours();
  return hours >= 11 && hours < 19;
}

function getGenesis() {
  const network = process.argv[2]
  switch (network) {
    case "gnosis":
      return 1638993340
    case "chiado":
      return 1665396300
    default:
      throw Error(`unknown network ${network}`)
  }
}

for (let i = firstFutureInterval; i <= firstFutureInterval + intervalsToFuture; i++) {
  const timestamp = genesisTimestamp + (i * interval);
  const date = new Date(timestamp * 1000);
  if (isWeekday(date) && isWithinTimeRange(date)) {
    console.log(
      `Slot ${i * interval / 5}`,
      `ts ${timestamp}`,
      'UTC',
      date.toLocaleString('en-GB', { weekday: 'short', timeZone: 'UTC' }),
      date.toLocaleString('en-GB', { timeZone: 'UTC' })
    );
  }
}