It's not that Flash Player decides it wants to convert the Date to a different timezone. It's about what data Flash Player has about that Date. When a Date is sent over the wire, particularly when using AMF either with Blaze or CF or whatever, the date is sent as the Unix timestamp, which is the number of milliseconds since 1970. That keeps the data transfer very small and simple, all you need to send is a single Number, which only takes up 8 bytes.
So then Flash Player gets this single number, which represents the number of milliseconds since 1970, and it has to figure out how to turn that into a formatted Date. But that means that if you have a date of Jan 1 2008 @ 12pm in California (Unix timestamp of 1199188800), that same timestamp gets shown as 9am in New York. Because Flash Player has no idea that that same Unix timestamp is meant to be formatted in California time, you end up showing different times (and potentially even different dates if the timezone difference extends across midnight). So like people have mentioned, in order to get the date to display the right way you have to send more data. This can either mean sending the timezone offset that is supposed to be used for display, which will then require some offset conversion on the clientside, or sending the Date as a String, which takes up more bytes than the simple Number and requires a simple String to Date conversion on the client. But using the normal Date object with AMF will only send the number of milliseconds since 1970, and that information alone is not enough if you want to show the same formatted time across all timezones. Doug On Mon, Dec 15, 2008 at 9:13 PM, Dale Fraser <d...@fraser.id.au> wrote: > The problem is that somehow. > > > > If the server serving that date is in a different location to you, flash > player says, well I wont show that date I just got from the database, I'll > adjust it to your time. This is totally useless, so for example if Im > logging actions in an audit, the date in those logs could look different > from one user to another. > > > > Regards > > Dale Fraser > > http://learncf.com > > http://flexcf.com > > > > > > *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On > Behalf Of *Randy Martin > *Sent:* Tuesday, 16 December 2008 3:52 PM > > *To:* flexcoders@yahoogroups.com > *Subject:* RE: [flexcoders] Flex dates and time zones. > > > > I guess I really don't understand what the problem is here?? I have a > smalldatetime (or a datetime) in a MSSQL database. I setup a value object in > AS to have the date field as a Date object. I go get the date from > ColdFusion using RemoteObject. The cfc sets up a CF "value object" with the > date as a CF Date object. And, voila, the MSSQL datetime becomes an AS Date > object. > > > > I don't have to convert anything to a string, or any other kind of object. > So, what's the problem here??? > > > > ~randy > > > > *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On > Behalf Of *Dale Fraser > *Sent:* Monday, December 15, 2008 9:51 PM > *To:* flexcoders@yahoogroups.com > *Subject:* RE: [flexcoders] Flex dates and time zones. > > > > Why does Flex do this? > > > > If I get a date out of the db and want to deal with it as a date, surely > this should be possible. How can the flash player determine it needs to > change it to a different date. > > > > There must be some other option rather than converting to a string. > > > > Regards > > Dale Fraser > > http://learncf.com > > http://flexcf.com > > > > > > *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On > Behalf Of *Paul Kukiel > *Sent:* Tuesday, 16 December 2008 1:46 PM > *To:* flexcoders@yahoogroups.com > *Subject:* Re: [flexcoders] Flex dates and time zones. > > > > Thanks Tracy, > > > > I knew I was going to get this answer. I already got this working with > strings as a test sample looks like I have to convert the rest of the app. > Surely others are feeling my pain with this issue. > > > > And Nate I look forward to seeing what you have come up with when its > ready. > > > > Paul. > > > > On 15/12/2008, at 7:46 PM, Tracy Spratt wrote: > > > > > > > > Pass the date as a string. > > Tracy > > > ------------------------------ > > *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On > Behalf Of *Paul Kukiel > *Sent:* Monday, December 15, 2008 3:17 PM > *To:* flexcoders@yahoogroups.com > *Subject:* [flexcoders] Flex dates and time zones. > > > > I have a date in a server in Australia: 22/12/2008 12:00:00 AM > > I am using this label function for the grid to try and fix the time zone > issue but my date always comes back to me as 21/12/2008 in the datagrid. I > really just wan the exact date from the database regardless of where I am in > the world. > > Any ideas? > > > // Label Grid Date > public static function labelGridDate(item:Object, > column:DataGridColumn):String { > var formatter:DateFormatter = new DateFormatter(); > var myDate:Date = item[column.dataField]; > formatter.formatString = "DD MMM YYYY"; > > var offsetMilliseconds:Number = > item[column.dataField].getTimezoneOffset() * 60 * 1000; > item[column.dataField].setTime(item[column.dataField].getTime() > + offsetMilliseconds); > > return formatter.format(item[column.dataField]); > } > > Paul. > > > > > > > > > > > >