Lmillard
asked on
Set daylight saving in Coldfusion
Hi,
Hopefully a simple one here. I have an application that on my localhost reports the time correctly, same as the windows box it is on. When I upload it to my live windows server it shows 1 hour behind. I have now code that is trying to be clever for DST. Is this a setting I can tweak as it looks like it isn't using the Windows server time as I expected.
Regards
Leigh
Hopefully a simple one here. I have an application that on my localhost reports the time correctly, same as the windows box it is on. When I upload it to my live windows server it shows 1 hour behind. I have now code that is trying to be clever for DST. Is this a setting I can tweak as it looks like it isn't using the Windows server time as I expected.
Regards
Leigh
ASKER
Hi,
The live server is in the UK so should be ok and the windows time shows the correct time.
The details from the dumps are as follows,
now() = 14:52
getTimeZoneInfo() =
isDSTon = NO
utcHourOffset = 0
utcMinuteOffset = 0
utcTotalOffset = 0
java: 1.6.0_04
When I compare this to the results on my dev box the getTimeZoneInfo() results are YES, -1,0,-3600
How can I update this?
Thanks
The live server is in the UK so should be ok and the windows time shows the correct time.
The details from the dumps are as follows,
now() = 14:52
getTimeZoneInfo() =
isDSTon = NO
utcHourOffset = 0
utcMinuteOffset = 0
utcTotalOffset = 0
java: 1.6.0_04
When I compare this to the results on my dev box the getTimeZoneInfo() results are YES, -1,0,-3600
How can I update this?
Thanks
> now() = 14:52
Ok, so the live server is using GMT (no daylight savings time) so those settings look correct. So what's the "wrong" time you're seeing? Plus or minus one hour?
> dev box the getTimeZoneInfo() results are YES, -1,0,-3600
So your local box is 1 hr ahead of GMT, correct?
Are your sure it's not your code that's off? What code are you using?
> How can I update this?
Depends on the source of the problem. It's still not clear yet...
Ok, so the live server is using GMT (no daylight savings time) so those settings look correct. So what's the "wrong" time you're seeing? Plus or minus one hour?
> dev box the getTimeZoneInfo() results are YES, -1,0,-3600
So your local box is 1 hr ahead of GMT, correct?
Are your sure it's not your code that's off? What code are you using?
> How can I update this?
Depends on the source of the problem. It's still not clear yet...
ASKER
Sorry, being unclear.
My dev box currently shows 16:15 and the CF code correctly uses 16:15
The live box using the same code shows 16:15 and any CF code generates 15:15.
The dev box getTimeZoneInfo() results are YES, -1,0,-3600
The live box getTimeZoneInfo() results are NO, 0,0,0
My dev box is using time correctly as far as I can tell and the live server should be set so that it displays the same getTimeZoneInfo() as the dev one. Just not sure where that function draws its data from and how to update it.
My dev box currently shows 16:15 and the CF code correctly uses 16:15
The live box using the same code shows 16:15 and any CF code generates 15:15.
The dev box getTimeZoneInfo() results are YES, -1,0,-3600
The live box getTimeZoneInfo() results are NO, 0,0,0
My dev box is using time correctly as far as I can tell and the live server should be set so that it displays the same getTimeZoneInfo() as the dev one. Just not sure where that function draws its data from and how to update it.
> The live box using the same code shows 16:15 and any CF code generates 15:15.
Well if now() is returning the correct time -16:15 - that strongly suggests your custom CF code is what's wrong. Can you post the "cf code" that generates 15:15?
> Just not sure where that function draws its data from and how to update it.
IIRC it gets the info from java.util.TimeZone. That can only be changed in the jvm args. But I'm still not sure that's the problem yet...
Edit: Here's how you can check the time zone name
http://www.petefreitag.com/item/132.cfm
Well if now() is returning the correct time -16:15 - that strongly suggests your custom CF code is what's wrong. Can you post the "cf code" that generates 15:15?
> Just not sure where that function draws its data from and how to update it.
IIRC it gets the info from java.util.TimeZone. That can only be changed in the jvm args. But I'm still not sure that's the problem yet...
Edit: Here's how you can check the time zone name
http://www.petefreitag.com/item/132.cfm
ASKER
I have just added the code from Pete Freitag and both servers are GMT.
It is #now()# which outputs the incorrect time on the live server
It is #now()# which outputs the incorrect time on the live server
> The live server is in the UK so should be ok and the windows time shows the correct time.
> The details from the dumps are as follows,
> now() = 14:52
> dev box shows 16:15
> live box shows 16:15
> It is #now()# which outputs the incorrect time on the live server
Ok .. I'm seeing conflicting reports or I'm not clear which is o/s vs JVM time. To clear up the confusion, can you just post the full results of *all* the tests (from both servers):
----------------
Now: <cfdump var="#now()#"><br>
Time Zone: <cfdump var="#getTimeZoneInfo()#">
CF Version: <cfdump var="#server.coldfusion#">
<cfset version = createObject("java", "java.lang.System").getPro
Java: <cfdump var="#version#"><br>
<cfset tz = CreateObject("java", "java.util.TimeZone")>
<cfset tz = tz.getDefault()>
TimeZone: <cfdump var="#tz.getDisplayName()#
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
> The details from the dumps are as follows,
> now() = 14:52
> dev box shows 16:15
> live box shows 16:15
> It is #now()# which outputs the incorrect time on the live server
Ok .. I'm seeing conflicting reports or I'm not clear which is o/s vs JVM time. To clear up the confusion, can you just post the full results of *all* the tests (from both servers):
----------------
Now: <cfdump var="#now()#"><br>
Time Zone: <cfdump var="#getTimeZoneInfo()#">
CF Version: <cfdump var="#server.coldfusion#">
<cfset version = createObject("java", "java.lang.System").getPro
Java: <cfdump var="#version#"><br>
<cfset tz = CreateObject("java", "java.util.TimeZone")>
<cfset tz = tz.getDefault()>
TimeZone: <cfdump var="#tz.getDisplayName()#
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
ASKER
Sure, here you go. See attached image
dateTest.jpg
dateTest.jpg
Can you check one more setting?:"
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
ASKER
no problem,
dev server
Java: 1.6.0_14
TimeZone: Greenwich Mean Time (Europe/London)
live server
Java: 1.6.0_04
TimeZone: Greenwich Mean Time (GMT) User.timezone = GMT
dev server
Java: 1.6.0_14
TimeZone: Greenwich Mean Time (Europe/London)
live server
Java: 1.6.0_04
TimeZone: Greenwich Mean Time (GMT) User.timezone = GMT
I don't see the user.timezone for the DEV server. If you add a default, what does it say?
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
<cfset prop = createObject("java", "java.lang.System").getPro
User.timezone = <cfdump var="#prop#"><br>
ASKER
Development Server
Java: 1.6.0_14
TimeZone: Greenwich Mean Time (Europe/London) User.timezone = Europe/London
Live Server
Java: 1.6.0_04
TimeZone: Greenwich Mean Time (GMT) User.timezone = GMT
Java: 1.6.0_14
TimeZone: Greenwich Mean Time (Europe/London) User.timezone = Europe/London
Live Server
Java: 1.6.0_04
TimeZone: Greenwich Mean Time (GMT) User.timezone = GMT
BTW: I don't think your dev box is running GMT. Most of the sites I've checked say the real GMT is now around 4 PM/16:xx, not 5 PM/16:58
ASKER
Not sure but I presume british summer time is GMT + 1 but it must account for this surely
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ASKER
but the dev box is showing the correct time of 17:30 where as the live box is showing 16:30. Wouldn't this make the dev one show 16:30 too?
Yes. But if you want to use UTC/GMT then the correct time is 16:30 not 17:30. That means you must change your dev box.
However, if you have admin access to the live server - you can apply the same change, just using "Europe/London" instead of "GMT". Then both boxes will be using "Europe/London" not UTC, and both should report: 17:30.
However, if you have admin access to the live server - you can apply the same change, just using "Europe/London" instead of "GMT". Then both boxes will be using "Europe/London" not UTC, and both should report: 17:30.
ASKER
I have admin access to the server but cannot locate jvm.config, where would this normally be?
It varies based on the install type. For a single server install it's in:
C:/ColdFusion8/runtime/jre
I'd recommend trying it on your dev server 1st. Be sure to make a backup! jvm.config is a key file. If you mess it up, the CF server won't start, but if you have a backup, just restore it and everything's good.
Also, be aware the timezone change will affect ALL applications on that JVM. (I don't know if yours is the only app or if there are others...)
C:/ColdFusion8/runtime/jre
I'd recommend trying it on your dev server 1st. Be sure to make a backup! jvm.config is a key file. If you mess it up, the CF server won't start, but if you have a backup, just restore it and everything's good.
Also, be aware the timezone change will affect ALL applications on that JVM. (I don't know if yours is the only app or if there are others...)
ASKER
Thanks for your help and patience on this one.
After a bit of additional research it turns out the timezone requires was Europe/London as GMT did not adjust for DST
After a bit of additional research it turns out the timezone requires was Europe/London as GMT did not adjust for DST
That makes sense. I wasn't sure if you wanted both to use GMT or both to use Europe/London ie GMT +1:00. In summary, I should've said ... ;-)
Old Time Zone Settings:
Dev box => Europe/London (GMT+1:00)
Live box => GMT
New Time Zone Settings:
* If you want both machines to use GMT, change the Dev box => GMT.
* If you want both to use "Europe/London", change the Live box => Europe/London
Old Time Zone Settings:
Dev box => Europe/London (GMT+1:00)
Live box => GMT
New Time Zone Settings:
* If you want both machines to use GMT, change the Dev box => GMT.
* If you want both to use "Europe/London", change the Live box => Europe/London
Now: <cfdump var="#now()#">
Time Zone: <cfdump var="#getTimeZoneInfo()#">
CF Version: <cfdump var="#server.coldfusion#">
<cfset version = createObject("java", "java.lang.System").getPro
Java: <cfdump var="#version#">
If either of those are the issue, then it can only be changed at the server/jvm level. Do you have admin access to the live server?