Rollback from Daylight Savings Time

Impacts and resolutions for BlackBerry

1. Rollback DST in Mauritius
The Government of Mauritius announced the rollback of daylight saving time (DST) in Mauritius as from March 29th, 2009 at 02:00 A.M local daylight saving time (GMT+04:00).

Changes are shown in the table below:

Local Time	DST	UTC offset	Zone Name
Sunday 29th March 2009 ,  at 01:59:57 Sunday 29th March 2009 ,  at 01:59:58 Sunday 29th March 2009 ,  at 01:59:59 Sunday 29th March 2009 ,  at 03:00:00 Sunday 30th October  2008 ,  at 03:00:01 Sunday 30th October  2008 ,  at 03:00:02 Sunday 30th October  2008 ,  at 03:00:03	Yes Yes Yes No No No No	+5 +5 +5 +4 +4 +4 +4	MUT MUT MUT MUT MUT MUT MUT

2. What is the impact on my BlackBerry?
The DST may not be programmed in to your BlackBerry, which may create issues with your appointments and time settings. The current Time Zone (XXX GMT +5.00) should be changed to normal Time Zone i.e. XXXX GMT +4.00 (e.g. Abu Dhabi GMT +4.00).

Impact on the BlackBerry device calendar

1. Will appointments on my BlackBerry calendar be affected?
Yes, appointments with a start date falling after March 29th may display incorrectly.

2. Would a recurring appointment started during the affected period last year display incorrectly?
Yes. Even if the recurring appointment started before the affected period in previous years, the start and end times may display incorrectly after the March 29th. In some cases, all instances of this appointment will display incorrectly thereafter.

3.  What happens when my BlackBerry synchronizes its calendar with my email client, or with my computer calendar through BlackBerry Desktop Manager?
In both situations your appointments and reminders may display incorrectly on your BlackBerry during the affected period.

4. Do I need to update my appointments manually during the affected period if I've updated my BlackBerry through our BES?
Yes. Appointments created after the update is done, will appear one hour ahead in the BlackBerry calendar. Appointments created using the normal Time Zone (GMT +4.00) on updated computers and BlackBerry devices will display correctly.

5. Is there a way to make all appointments appear correctly on my BlackBerry?
No.
Existing appointments will be one hour ahead.
New Appointments created using the normal Time Zone rules on updated computers and BlackBerry devices will display correctly.
Refer to 'Change Time Zone' instructions.

Note for BlackBerry Internet Service (BIS) users
If you run your BlackBerry as a stand-alone device to connect directly to your ISP-based email, you can't update its software. The only solution is to manually change your BlackBerry's clock, as outlined above.

6. Can I update my BlackBerry using BlackBerry Connect software?
Yes. A BlackBerry with BlackBerry Connect sets its clock from the operating system it connects with. Contact your supplier to check on software updates.

7. What happens if a user changes his Time Zone from Ekaterinburg (GMT +05:00) to Abu Dhabi (GMT +04:00) on his BlackBerry Device?
All existing appointments will be moved ahead by one hour. This implies that there will be anomalies between the BlackBerry device and the user's mailbox.
New appointments created using the normal Time Zone (GMT +04:00) on updated computers and BlackBerry devices will display correctly.

Change the Time Zone - Mauritius

To change the Time Zone to Abu Dhabi (GMT +04:00)
1.    From the BlackBerry Home screen, click Options.
2.    From the Options screen, click Date/Time.



3. Follow instructions below: