Nodejs Timezone Calculate toClientTimezone()

Here you can find the source of toClientTimezone()

Method Source Code

Date.prototype.toClientTimezone = function () {
    var offset = new Date().getTimezoneOffset();
    this.setTime(this.getTime() + (offset * 60 * 1000));
    return this;//  w w w . java2s . c om
}

Related

  1. getD(zone)
    Date.prototype.getD = function(zone) {
      zone = typeof zone !== 'undefined' ? zone : this.getTimezoneOffset();
      return Math.floor((this.getTime()-zone*60000)/86400000);
    
  2. getDSTTimezoneOffset()
    Date.prototype.getDSTTimezoneOffset = function() {
      var jan = new Date(this.getFullYear(), 0, 1);
      var jul = new Date(this.getFullYear(), 6, 1);
      return Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
    document.cookie = "auto_timezone_offset=" + -60 * new Date().getDSTTimezoneOffset();
    
  3. getStdTimezone()
    Date.prototype.getStdTimezone = function() {
        var jan = new Date(2015, 0, 1);
        var jul = new Date(2015, 6, 1);
        return Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
    
  4. getTimezone()
    Date.prototype.getTimezone = function () {
        return this.toString().replace(
            /^.*? ([A-Z]{3}) [0-9]{4}.*$/, "$1").replace(
            /^.*?\(([A-Z])[a-z]+ ([A-Z])[a-z]+ ([A-Z])[a-z]+\)$/, "$1$2$3");
    
  5. getTimezoneOffsetgetTimezoneOffset()
    Date.prototype.getTimezoneOffset = function getTimezoneOffset() {
      if (this._timezoneOffsetStd === undefined) {
        var date1 = new Date(this.getFullYear(), this.getMonth(), this.getDate(),
                             0,0,0,0),
            temp = date1.toGMTString(),
            date2 = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
        this._timezoneOffsetStd = (date2 - date1) / 60000;
      return this._timezoneOffsetStd;
    ...
    
  6. toServerTimezone()
    Date.prototype.toServerTimezone = function () {
        var offset = new Date().getTimezoneOffset();
        this.setTime(this.getTime() - (offset * 60 * 1000));
        return this;
    
  7. tz(timezone)
    Date.prototype.tz = function(timezone) {
      var result = [], date;
      var utc = this.getTime();
      var data = data_IANA[timezone.toUpperCase()];
      if (data === undefined) {
        data = data_abbr[timezone.toUpperCase()];
      if (data !== undefined && data.constructor === String) {
        date = utc + (+data.split(':')[0] * 60 * 60 * 1000) + (((+data.split(':')[1]||0) * 60 * 1000) * (+data.split(':')[0] < 0 ? -1 : 1));
    ...