js timestamp shows year, month and day according to time

Method for converting year, month, day, hour, minute, and second

function formatTime(date) {
  const year = date.getFullYear();
  const month = date.getMonth() + 1;
  const day = date.getDate();
  const hour = date.getHours();
  const minute = date.getMinutes();
  const second = date.getSeconds();
  return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, second].map(formatNumber).join(':');
}

const formatNumber = (n) => {
  const str = n.toString();
  return str[1] ? str : '0' + str;
};

Time zone conversion method

/*****

* i is the time zone value

* timeVal incoming timestamp

*******function getLocalTime(i, timeVal) {

  // Parameter i is the time zone value number, for example, Beijing is the East Eight District, enter 8, West 5 enter -5 
  if (typeof i! == 'number') return; 
  var d = new Date (timeVal); 
  // get The number of seconds from January 1, 1970 to the present 
  var len = timeVal; 
  // The time offset difference between local time and GMT time 
  var offset = d.getTimezoneOffset () * 60000; 
  // Get the current Greenwich time 
  var utcTime = len + offset; 
  return formatTime (new Date (utcTime + 3600000 * i)); 
} 
console.log (getLocalTime (7, 1586941817471)); // The time in the East 7 area, Bangkok, Thailand, if you do your own test, it is better than Beijing Just an hour short.

Eastern Time:

Zero time zone-London time

East 1st District-Berlin Time

East Second District-Athens Time

Eastern Third District-Moscow Time

East Five District-Islamabad Time

East Six District-Colombo Time

East Seven District-Bangkok Time

East Eight District-Beijing Time

East Kowloon-Tokyo Time

East Ten District-Sydney Time

East Twelve District-Fiji Time

Western Time:

West Tenth District-Fiji Time

West Nine District-Alaska Time

Western Eight District-Pacific Time (United States and Canada)

West Seven District-Mountain Time (USA and Canada)

West Sixth District-Central Time (United States and Canada)

West Five District-Eastern Time (USA and Canada)

West Fourth District-Atlantic Time (Canada

West Third District-Brasilia Time