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Daylight Saving Time

Daylight Saving Time (DST) - Frequently Asked Questions



  1. What is changing with US Daylight Saving Time?
  2. In 2006, the United States Congress and Canadian Parliament passed a bill which adjusts the start and end time for Daylight Saving Time. The starting and ending dates for Daylight Saving Time are changing in the U.S. and Canada as of 2007 are:
    • DST will start three weeks earlier (2:00 A.M. on the second Sunday in March, 03.11.2007).
    • DST will end one week later (2:00 A.M. on the first Sunday in November, 11.04.2007).
  3. What is changing with Western Australia Daylight Saving Time?
  4. On Tuesday 21 November, 2006, the Western Australia (WA) parliament passed a bill to introduce daylight saving for a three year trial period. The start and end dates for the daylight saving periods are:

    Start End
    The hour of 2 a.m. on
    3 December 2006    		 The hour of 2 a.m. on
    25 March 2007
    The hour of 2 a.m. on
    28 October 2007    		 The hour of 2 a.m. on
    30 March 2008
    The hour of 2 a.m. on
    26 October 2008    		 The hour of 2 a.m. on
    29 March 2009
    Note that the times are specified as standard time, so these periods end at 3:00 a.m. daylight time.
  5. What are the steps specific to Western Australia DST?
  7. Are mobile devices and Good software affected?
    • Yes, all Good Mobile Messaging supported devices will be affected and Good Server and Client software will need to be upgraded due to the changes in Daylight Saving Time.
    • Good Client software - customers MUST upgrade to Good Mobile Messaging 4.9.3 client software (available end of February 2007).
    • Good Server software - customers MUST upgrade to Good Messaging Server for Exchange version 4.9.3 and Good Messaging Server for Domino version 4.5.6 (available February 28, 2007).
    • Windows 2003 and Mobitex devices are not supported. There is also no fix or official work around for the extended DST changes for WM 2003 devices and Mobitex devices.

      An unsupported workaround for Windows Mobile 2003 users is to follow the steps outlined below:

      1. Change device time manually to match current time in Extended DST time period.
      2. On the second Sunday in March (March 11, 2007), Go to Good Launcher - > Preferences - > Time zone and select a time zone one hour ahead (e.g. if user is in "Pacific Time" zone, then use "Mountain Time" zone).
      3. Also uncheck the Observe Daylight Saving Time checkbox
      4. On the first Sunday in November, (November 4, 2007) when the DST period ends, users should revert back to their current time zone. In the above example it would be Pacific Time.

      This workaround will allow users to see the calendar appointments correctly on their device.

      * * * For this WM2003 unsupported work around only, users are strongly advised not to create appointments from their handheld as they may be off by an hour. * * *

      These steps have to be repeated every year.

  9. What happens if I don't upgrade my Good software to version 4.9.3?
    • The Good Mobile Messaging calendar events and reminders will be off by one hour
    • Appointments created from the device will be off by one hour
    • The display of clock/time will be off by one hr if the device is not configured to receive it's time and timezone from the wireless network.
    • All other functionality will work normally and will not be impacted
    • All other Good Messaging services (Good Mobile Intranet, Good Mobile Defense, Good Management Console, and Good Monitoring Portal) will not be impacted
  11. What are the steps for upgrading my Microsoft Exchange environment?
    1. Run Windows Operating Systems Patches
    2. Update the CDO (cdo.dll) patch
    3. Update Good Messaging Server to 4.9.3
    4. Update Good Mobile Messaging Client to 4.9.3
    5. Run the Microsoft Outlook Time Zone Data Update Tool
    Note: Good has tested these recommendations at its own facilities and through various customer betas with good results. Good cannot guaranty these results for each unique customer environment. So we encourage you to review the recommendations of Microsoft and IBM closely and to proceed cautiously in light of your special knowledge of your own systems.
  13. What are the steps for upgrading my Lotus Domino environment?
    1. Run Windows Operating Systems Patches
    2. Update the Domino Server
    3. Update Good Messaging Server to 4.5.6
    4. Update Good Mobile Messaging Client to 4.9.3
    5. Run the Mail Agents
    Note: Good has tested these recommendations at its own facilities and through various customer betas with good results. Good cannot guaranty these results for each unique customer environment. So we encourage you to review the recommendations of Microsoft and IBM closely and to proceed cautiously in light of your special knowledge of your own systems.
  15. Do I need to apply DST patches from my device manufacturers?
    • Device Manufacturer DST Patches are not needed for Good Mobile Messaging but is recommended for other applications on the device.
    • Users should ensure that the device clock matches the current time during the extended DST period.
    • The effects of the "device time" being incorrect are:
      • Display of clock/time on Home screen
      • Current meeting cursor / grayed-out hours in current day will be off by one hour
      • Reminders off by one hour
  17. What happens if I do not follow the five steps outlined above?
  18. The table below provides possible update scenarios and outcomes. It is based the following example: A single occurrence appointment made on Jan 11, 2007 for March 12, 2007 (before OS DST patches have been made).

    Update Scenario Outcome
    1 No updates applied (GM Client previous to 4.9.1.2) The appointment time is correctly displayed but user will be late by 1 hour if using Desktop time.

    Appointment time correctly displayed on the device if device time is correct.
    2 Good Mobile Messaging Client Upgraded Only

    (no other updates)

    		 If created on the Outlook / Notes, then the appointment time on Good Mobile Messaging is incorrect.

    If created on Good Mobile Messaging, then the appointment time is incorrect on Outlook / Notes.
    3 MS Outlook Time Zone Updater Tool / Notes Mail Agents Not Applied

    (all other updates applied)

    		 Appointment time would be off by 1 hour if made with Outlook / Notes before OS patch or with Good Mobile Messaging Client previous to 4.9.2
    4 All OS DST patches but did not updrade Good Messaging software Same as Scenario 2
    5 GM Server and Client upgraded only.

    (no other upgrades)

    		 Same as Scenario 2

    These are just a few of the scenarios and outcomes to illustrate the importance of why you should follow all 5 steps we have listed above.

  19. When will Good upgrade software for the DST change be available?
  20. Good Mobile Messaging Client version 4.9.3 - targeted to be available by Feb 28, 2007 - http://www.good.com/download or https://get.good.com

    Good Messaging Server version 4.9.3 (and 4.5.6 for Domino) targeted to be available by Feb 28, 2007 - http://www.good.com/download

  21. Where can I get more information about the DST change and its effect on Good software?
  22. Schedule of planned communications:
    • Tech Support newsletters and Marketing newsletters sent and updates will be sent with instructions
    • o Good Knowledge Base (KB) article 17882 available at - http://www.good.com/faq/17882.html (up-to-date and available to the public)
  23. How can I purchase Good Technical Support?
  24. Good Technical Support is available on a subscription basis.

    If you need additional support managing or troubleshooting upgrades across devices and servers, we highly recommend purchasing a Good Support plan by contacting us at sales@good.com or calling 866-7-BE-GOOD.

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