Daylight Savings Time Conversion correction.

I have a question. Will I need to make the following correction each year after/belore daylight savings time?? If so, is there a way to make this change programmatically?
http://digital.ni.com/public.nsf/allkb/95CA7D76758B736B8625777C006C7934
Thank you, John

Look at the Date/Time to Seconds function and its inverse. It uses a cluster to get a timestamp or visa versa. This will help you tell if DST is used. If you have a timestamp already, I'm pretty sure LabVIEW accounts for DST already. But use these functions to make sure.
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ICal on iPad no reflecting daylight savings time change correctly

i have my iCal on my iPad to auto update with daylight savings, however, the start times are all ok, but the end times do not reflect the time change. am i missing something?

I fixed this problem by going to system preferences--mail, calendars--and turned off time zone support. When my iPhone didn't change time for daylight savings, i had changed the time manually and apparently this moved my time zone from SF to Anchorage. After disabling time zone support, all my appointments were correct. You can also disable tim zone support withon the iCal application on a mac.

Correct daylight savings time?

I forgot to change my camera for daylight savings time, so all of my photos taken since April 02 are off by about an hour. Normally, I would not care, but my first child happened to be born that morning, and so I would really like to have the correct time recorded with each image.
I know I can make batch changes to the images in iPhoto, but there doesn't seem to be an option to simply add 1 hour to the images.
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Thanks.

Bob:
You can do that outside of iPhoto with PhotoInfo. If all of those files are in one or two or three rolls, you can go to the iPhoto Library/Originals folder and copy those roll folders to the desktop. Then run PhotoInfo in batch mode and change the hour value by 1. Then reimport those folders into iPhoto allowing the importing of duplicates. iPhoto will then recognize the correct time. The incorrect photos can then be deleted from iPhoto.

IdM Scheduler and Time Change to Daylight Savings Time GMT to BST

This isn't really a 'question' , but just a topic for discussion.
We're not live yet, but will be by the time the clocks go back. So I'm just interest to hear everyone's experiences and any issues with regards to the switching to / from DST
I did some "interesting" (or not) tests last night to see what happens with Pending Values which are due to take effect at the time change threshold of 01:00 GMT when switching to Daylight Savings Time (BST) GMT +0100.
It seems as if the IdM scheduler keeps going according to UTC or GMT. However any values provisioned to target systems or to local tables using the ddm.datetime8601 system variable are in local time according to the runtime server or SQL server's locale settings.
I set up a task to output from a javascript the current system date
using the following in the functions.
currentTime = new Date();
return currentTime.toString(); // returns Locale Time String
currentTime = new Date();
return currentTime.toUTCString(); // returns UTC Time String
in the same pass I also output the ddm.datetime8601 system parameter and the ddm.time24 system parameter.
This task was to update a comment on an entry and Scheduled to run at 00:00:00 and was executed at 00:00:06 GMT all times were still in GMT as expected.
Local Time: Sun Mar 27 00:00:06 GMT-0000 (GMT) 2011, UTC Time: Sun, 27 Mar 2011 00:00:06 GMT, ddm.datetime8601: 2011-03-27T00:00:06, ddm.time24: 00:00:06
This task was scheduled at 01:00:00 in IdM and was exectued at 01:00:08 GMT by the runtime, and you can see the local time is being correctly reported as 02:00:08 BST. Note also the ddmdatetime8061 is also 02:00:08 i.e. BST.
Local Time: Sun Mar 27 02:00:08 GMT+0100 (BST) 2011, UTC Time: Sun, 27 Mar 2011 01:00:08 GMT, ddm.datetime8601: 2011-03-27T02:00:08, ddm.time24: 02:00:08
In the database the entry values MXI_VALUES ModifyTime field has the GMT / UTC timestamp.
I also set up some pending value objects to be applied at 00:59:59 and 01:30:00 to see if the 01:30:00 would be 'skipped' as the locl clock change would've gone from 00:59:59 to 02:00:00. Well the pending values were correctly applied and expired and no 'lost' transactions happened as a result of the change.
So essentially it seems to me that the IdM runtime and scheduler times are all based on UTC / GMT.
I guess it's only an issue twice a year if you're expecting something to happen at a specific local time 01:00:00 or if you've got a global user base and their account expiry should be in each user's own country's local time. In these cases, it would seem that you'd need to convert the schedule times and pending value times to UTC first before setting them in the database.
Has anyone else had any issues, thoughts, questions or suggestioins on scheduling tasks which span the DST time change when switching to and from Daylight Savings Time.
Edited by: Paul Abrahamson on Mar 27, 2011 10:51 AM

Read here:
http://www.appleinsider.com/articles/10/10/11/applesays_ios_software_update_to_fix_pesky_alarm_clockbug.html

Daylight Savings Time and Alarmsk

Since the daylight savings time updated over the weekend the alarms I had programmed on my iPhone will not set properly. The phone displays the correct current time so I know the clock has updated but any alarms I have set for the hour of 2am - 3am don't display the proper time. They keep reverting to 1-2am. I have deleted them and recreated them with the same results, on 2 different iPhones, a 4gig and an 8gig.

I see im not the only one that gets up early. v1.1.3 and updated to 1.1.4 I am unable to set the alarm to any time in 2AM (2:01, 3, 4, 5, etc..) any time set to 2AM shows 1AM in the alarm. 2PM shows fine. Any hour of the day shows fine. The error is setting a time of 2AM as it will not show that time and will revert to 1AM.
I am in a zone that uses DST.
I guess apple doesnt want us to wake up to pay the bills.
I hope someone has a fix for this before I goto bed... busting out the old alarm clock now.

Daylight Savings Time and Time Zone Issue:

Howdy! Many of us woke up this morning to be dismayed to find that our iPhone was TWO hours behind instead of falling back one for the Daylight Savings Time adjustment, and were late for church. I have an iPhone 4S, with iOS 5...
I was working at that time of morning, and the initial switch went well. However, when I woke up, the clock was yet another hour behind. A little investigation showed that the Time zone had been changed to Denver (It was previously on Chicaco, and I live in Dallas.) I tried to select it to change it, and it wouldn't allow me. If I turned off the Set Automatically feature, then I could change it, but when I turned the Set Automatically feature back on, it would re-set the time zone to Denver.
I found another thread where they discuss this:
https://discussions.apple.com/message/16644669
To fix this, put in airplane mode, then back out again, then re-choose your correct time zone. If this doesn't work, then try turning your phone completely off and then on again. Thanks to 4n6doc for the tip!
The airplane mode trick worked for me: I turned airplane mode on, then off, then went to the Date & Time and set my time zone to Dallas, TX while the Set Automatically was off. When I turned the Set Automatically back on, it changed Dallas to Chicago, which is what every iPhone iOS I've ever had has done.

Hi,
Yes this is a correct way to fix the issue. One thing however, how did you set the timezone? For correct daylight saving handling, you'll have to use the long version, like America/New Yorw, NOT GMT-5 (for example).
regards,
~ Simon

E-Load/e-ME and Daylight Savings Time Change

If you are using e-TEST suite versions 8.10 or older, please see the following knowledge base article on updating your JRE for e-Load and e-Manager Enterprise.
http://qazone.empirix.com/entry.jspa?externalID=201&categoryID=15
(you must be logged into QAZone to view this link)
It is recommended that e-Load and e-Manager Enterprise customers update the JRE on their e-Load and e-ME server machines using the SUN JRE patch referenced in the article.
e-TEST suite version 8.20 which is releasing this week does not require any update.
Message was edited by: jfernandes

My problem is that now CFMX 6.1 thinks that it is 8 hours
later in the day
than it really is (it is stuck on GMT now) and I am unable to
get CFMX to
acknowledge the operating systems clock. :-(
"GregK" <[email protected]> wrote in message
news:eord35$5mq$[email protected]..
The technote for this issue:
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=d2ab4470
has
another
link to a technote which addresses null pointer exceptions
after upgrading
the
JVM on CFMX 6.1 systems:
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=kb400232
The hotfix
described in that technote gives a fix for CFLDAP and
CFSERVLET tags after
the
new JVM is installed.
The important thing to note is that Adobe feels that
daylight savings time
will indeed present a problem for ColdFusion applications.
Unfortunately,
the
problems are not explained in any detail. I can guess that
functions like
DateDiff( ) may calculate incorrect values when spanning the
changed weeks
of
daylight savings time. As others have suggested; however,
simply retrieving
the system time, i.e. Now( ) function may not be affected as
long as the
operating system clock is set correctly.
Hope that helps.

CF MX and Daylight Savings Time Change

Next year 2007, the Daylight Saving day (chaning the clocks
for spring and fall) will be changing. The Spring date will be a
month earlier and the fall date a month later then it has been for
years.
How will the Cold Fusion Server for MX 7+ handle this? Will
it use the server time or use the internal CF Server clock?
Thanks.

My problem is that now CFMX 6.1 thinks that it is 8 hours
later in the day
than it really is (it is stuck on GMT now) and I am unable to
get CFMX to
acknowledge the operating systems clock. :-(
"GregK" <[email protected]> wrote in message
news:eord35$5mq$[email protected]..
The technote for this issue:
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=d2ab4470
has
another
link to a technote which addresses null pointer exceptions
after upgrading
the
JVM on CFMX 6.1 systems:
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=kb400232
The hotfix
described in that technote gives a fix for CFLDAP and
CFSERVLET tags after
the
new JVM is installed.
The important thing to note is that Adobe feels that
daylight savings time
will indeed present a problem for ColdFusion applications.
Unfortunately,
the
problems are not explained in any detail. I can guess that
functions like
DateDiff( ) may calculate incorrect values when spanning the
changed weeks
of
daylight savings time. As others have suggested; however,
simply retrieving
the system time, i.e. Now( ) function may not be affected as
long as the
operating system clock is set correctly.
Hope that helps.

CUE timezone and daylight savings time

Hi,
Having issue where CUEs don't seem to be adjusting for daylight savings time. Timezone is set correct to EST but is a hour off because its daylight savings time now. The router and CUE are configured to use same NTP server and router has summertime setting and adjusts for DST fine and has correct time but CUE is a hour behind, like it is not doing DST.
Were on version 2.2(2) of CUE software.
This is also in indiana where the laws changed recently so maybe that has something to do with this.
Any ideas?

Very likely due to the change in Indiana. A workaround would be to change the timezone to an EST zone that observes DST such as America/Louisville (Eastern Time - Kentucky - Louisville Area).
Hope this helps.
Brandon

SimpleDateFormat and Daylight Savings Time

I am trying to parse into a Date "April 15 1999" with "MMM d YYYY" using SimpleDateFormat. This string parses w/out error and the resulting Date is: Thu Apr 15 00:00:00 PST 1999. This is correct in that I am in California. The problem is that 4/15 is Daylight Savings Time in 1999. The getTimeZone result for the parent DateFormat is "SystemV/PST8PDT". I have wrestled with this for over a day now, I admit it, I need help.
Anyone have any ideas what could be happening here?
Thanks
Roger

When I run BigDaddy's code I get MST for the TZ (which is correct, my default is Mountain TZ and we don't observe DST. By this I surmise that BDLH's default is Pacific TZ and that it observes DST. The following code shows the setting of the TZ to "America/Los_Angeles" and produces the correct result. Windows XP.
import java.text.*;
import java.util.*;
public class PTest {
    public static void main(String[] args) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("MMM dd yyyy");
        Date dte = sdf.parse("April 15 1999");
        System.out.println(dte);
        SimpleDateFormat sdf2 = new SimpleDateFormat("MMM dd yyyy zzzz");
        sdf2.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
        System.out.println(sdf2.format(dte));
}

Daylight Savings Time in Calendar Bar

I am in Australia and we have also adjusted the clocks to Daylight Savings Time -
I am using an Iphone 5 with IOS 7.0.2 and all settings are set to time zone Sydney, in both Date and Time and Calendar.
The calendar shows the correct time at the top of the screen but the red bar that identifies the current time is showing pre DST - quite bizzare?
My Ipad is showing the same as is my wifes Iphone 5 (also updated with IO7)
I suggest this is an IO7 glitch/bug - anyone with a solution?

It's not just an hour late issue. My 3GS alarm went off an hour early this past Saturday. I tried to reset the alarm for the desired time and it didn't go off. Then my girlfriend's alarm on her 3GS did go off an hour late this morning.

All Event times change with Daylight Savings time

With the time change associated with daylight savings time (March 8 2008) all my event times were changed by one hour. EG: events that were 8:45 am are now 7:45 am. I have tried using Time machine to restore to pre March 8 status,but an adjustment takes place and the events remain 1 hour ahead. I have looked through the discussions pages and don't even see the issue identified. I have looked through the menu and preference items and find nothing to help.
I am surprised not to find this a front page topic today, March 9 2008.
Can anyone offer some help ?
Bill Mullen

Michael,
I never have changed time zones. Are you suggesting I should have time zone support enabled ?
I just tried turning on Time Zone Support, then restoring my calendar using Time machine. No change here.
As I mentioned earlier, this same problem occurred in the fall (although I don't remember which way the event times moved), this time they moved forward. At the Fall change I was using a Mac G4, which I used as a target to build this machine. The only thing I can think of that makes me unique (although I'm not in that small of a group) is that I have altered one of the files in iSync to allow iSync to sync calendar events with iCal. The syncing has always worked OK.
Right now I'm leary of attempting to do anything with iSync. I'm also finding it difficult to believe I'm not one of 10,000 people experiencing the same problem, but I don't see any other posts.
I found a time zone in south america which returns my times to the correct figure, with time zone support enabled, but that looks like a deeper hole to dig out of.
Still stuck,
Bill

Saskatchewan does not change to daylight savings time

Saskatchewan does not change to daylight savings time but my calendar on my iPhone 5s changed and my iMac stayed the same and the iMac time is the correct one

Automatically changing the date and time when set to automatically is carrier dependent since that is acquired by the cell tower the iPhone is connected with.

IPOD and Mac did not properly adjust for Daylight Savings Time

Hi, I have noticed that my iPod and my Mac Mini do not appear to have the latest update for Daylight Savings Time. There were a few adjustments this year that do not seem to be reflected on the Mac devices ??? I was using my iPod for time and was thrown off when time change before DST went into affect.

So, in your system preferences on the mini, under Date and Time, you have the box checked that says "Set date and time automatically"? Then, on the time zone tab, you have selected your correct time zone? I typically leave the box there unchecked that says to try and set automatically using current location.

HOw do I fix the fact that ical jumped (almost) all my events post daylight savings time change an hour ahead?

A few weeks ago I noticed that everything past 3/8 was an hour ahead, and I assumed once daylight savings time changed it would all jump back. It hasn't, and I don't know how to continue scheduling events or if I should change them all. I read that (a few years ago) the suggestion was give it 24 hours to adjust??

I think this problem is more complex. Background - UK clocks went back at the end of October; the USA went back one week later. I am in the UK and my Outlook calendar contains appointments created in the USA.
Someone in the USA created a recurring appointment before any clocks went back. In Outlook everything is correct. The meeting times are the same each week except for the one week between the two clock changes when, quite correctly, the meeting shows up one hour earlier. When I sync with my iPhone, the meeting shows at the same time every week regardless - this is incorrect.
Someone in the USA created a recurring appointment in the week after the UK clocks went back but before the USA clocks did. Outlook correctly shows the first occurrence as one hour earlier than all the following occurrences. Unfortunately - and this is the really nasty bit - the iPhone shows ALL the appointments one hour earlier than they should be. The only one that is correct is the first one.
This is a nasty bug and something that Apple needs to fix.

Daylight Savings Time Conversion correction.

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