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Cisco Network Registrar

Field Notice: FN - 62920 - New Zealand Daylight Saving Time Policy Changes Effective September 2007 - For Cisco Network Registrar (CNR)


September 07, 2007

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Products Affected

CNS NR DNS - 5.0 HPUX-11.0

CNS NR DNS - 5.0 NT-SP5

CNS NR DNS - 5.0 SOL-2.6

CNS NR DNS - 5.0 SOL-2.7

CNS NR DNS - 5.0 SOL-2.8

CNS NR DNS - 5.5 NT SP-6a

CNS NR DNS - 5.5 SOL-2.6

CNS NR DNS - 5.5 SOL-2.7

CNS NR DNS - 5.5 SOL-2.8

CNS NR DNS - 5.5 W2K-SP4

CNS NR DNS - 6.0 NT-SP6A

CNS NR DNS - 6.0 Solaris 2.8

CNS NR DNS - 6.0 W2K SP4

CNS NR DNS - 6.1 NT sp6a

CNS NR DNS - 6.1 Solaris 2.8

CNS NR DNS - 6.1 solaris 2.8

CNS NR DNS - 6.1 w2k - sp4

 

Problem Description

The operating systems of most Cisco products that support Daylight Saving Time (DST) have built in mechanisms to automatically change the times, based on current user-selected rules. Once the new DST is implemented, the time on devices that maintain time zone information will continue to change according to the old method, unless changes are made.

Background

On April 30th, 2007, the Minister of Internal Affairs issued a statement regarding a change in Daylight Saving Time policy for New Zealand. The change in policy has modified the start and end dates for Daylight Saving Time (DST). Beginning in 2007 and beyond, Daylight Saving Time in New Zealand will start on the last Sunday of September at 2 AM local time and end on the first Sunday of April at 3 AM local time.

Specifically for 2007-2008, Daylight Saving Time will begin at 2 AM local time on September 30th, 2007, and end at 3 AM local time on April 6th, 2008.

For more information, see the statement issued by the Minister of Internal Affairs.

The previous Daylight Saving Time policy for New Zealand dictated that DST started on the first Sunday in October and ended on the third Sunday in March.

On 30 April 2007, Hon Rick Barker, Minister of Internal Affairs, announced a three week extension to the period of daylight saving. Daylight saving now runs from the last Sunday in September until the first Sunday in April. Table below is a summary of changes to Daylight Savings Time, representing New Zealand local time:

Event

Prior to 2007

Year 2007 and After

Start

First Sunday in October

2 am on 30 September 2007 (Last Sunday in September)

End

Third Sunday in March

3 am on 6 April 2008 (First Sunday in April)

 

Problem Symptoms

As a result, any applications or log timestamps that CNR writes to, the system clock will be off 1 hour after Sept 30 2007.

Workaround/Solution

CNR relies on local time as obtained from the underlying OS. Microsoft information on NZ DST can be found at Microsoft TechNet page.

For HP information visit Java and U.S. Daylight Saving Time (DST) date changes page.

After applying the OS patch, you must patch Java. Visit Timezone Data Versions in the JRE Software page for detail.

Revision History

Revision

Date

Comment

1.0

07-SEP-2007

Initial Public Release

 

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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