How do I get browser timezone using Flex/AS3? - apache-flex

Question

How do I get client browser's timezone in Flex/AS3?

Answer 1

Have a look on the following: http://thanksmister.com/2011/10/06/determining-local-timezone-in-actionscript-air-flex-as3/
It may help.

Answer 2

Can you use the timeZoneOffest of the Date object?
Honestly, I believe this just passes back information based on the user's OS settings. I wouldn't have expected a bBrowser to actually have a time zone.

Answer 3

I've been wanting the same thing, but I found nothing on the Internet. I was already using FlexDateUtils (blog post), but it only formats timezones as 'GMT -600'. Luckily, I can safely say that the users of my app will be in the United States, so I modified to 'DateUtils.buildTimeZoneDesignation(date:Date)' as follows. I hope this helps.
private static function buildTimeZoneDesignation( date:Date ):String {
if ( !date ) {
return "";
}
var timezoneOffsetHours:Number = date.getTimezoneOffset() / 60;
// custom timezone handlers (assumes major U.S. zones with daylight savings time dates as of 2011)
if (3 < timezoneOffsetHours && timezoneOffsetHours < 12)
{
var usDST:Boolean = false;
// the date of the Sunday before today unless today is Sunday
var sundayBeforeToday:Number = date.date - date.day;
if (2007 <= date.fullYear) {
// test for since-2007 extended daylight savings time
if (2 < date.month && date.month < 10) {
// daylight savings time (April through October)
usDST = true;
}
else if (date.month == 2) {
// DST starts second Sunday in March
usDST = (7 < sundayBeforeToday);
}
else if (date.month == 10) {
// DST ends first Sunday in November
usDST = (0 < sundayBeforeToday);
}
}
else {
// test for pre-2007 daylight savings time
if (3 < date.month && date.month < 9) {
// daylight savings time (May through September)
usDST = true;
}
else if (date.month == 3) {
// DST starts first Sunday in April
usDST = (0 < sundayBeforeToday);
}
else if (date.month == 9) {
// DST ends last Sunday in October
usDST = (sundayBeforeToday + 7 <= 31);
}
}
// return custom timezone strings for US timezones
switch (timezoneOffsetHours) {
case 4:
// Eastern or Atlantic
return usDST ? "EDT" : "AST";
case 5:
// Central or Eastern
return usDST ? "CDT" : "EST";
case 6:
// Mountain or Central
return usDST ? "MDT" : "CST";
case 7:
// Pacific or Mountain
return usDST ? "PDT" : "MST";
case 8:
// Alaska or Pacific
return usDST ? "AKDT" : "PST";
case 9:
// Hawaii or Alaska
return usDST ? "HADT" : "AKST";
case 10:
// Samoa or Hawaii
return usDST ? "SDT" : "HAST";
case 11:
if (!usDST)
// Samoa
return "SST";
break;
}
}
// else just generate a GMT string
var timeZoneAsString:String = "GMT ";
// timezoneoffset is the number that needs to be added to the local time to get to GMT, so
// a positive number would actually be GMT -X hours
if ( 0 < timezoneOffsetHours && timezoneOffsetHours < 10 ) {
timeZoneAsString += "-0" + ( timezoneOffsetHours ).toString();
} else if ( date.getTimezoneOffset() < 0 && timezoneOffsetHours > -10 ) {
timeZoneAsString += "0" + ( -1 * timezoneOffsetHours ).toString();
}
// add zeros to match standard format
timeZoneAsString += "00";
return timeZoneAsString;
}