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Daylight Saving Time (DST) Changes

Cisco - Daylight Saving Time (DST) Changes

Document ID: 100709

Updated: Oct 21, 2009

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DST Header
Latest News
  • Sustaining Phase—On 11/26/08, the Global Time Zone - Daylight Saving Time (GTZ/DST) program entered its Sustaining phase, resulting in reduced activity on this program.
    The email alias dst-us@cisco.com and this Daylight Saving Time (DST) Changes website are available for ongoing communication.
  • Pakistan introduces Daylight Saving Time (DST) on June 1, 2008—Beginning on June 1, 2008, Pakistan observes Daylight Saving Time (DST) for at least 90 days. Pakistan’s federal cabinet announced a new conservation plan to reduce load-shedding, approving the closure of commercial centers at 9 pm and moving clocks forward by one hour from June 1, 2008 through October 31, 2008. These changes might affect basic operations of many Cisco products. The workaround for Pakistan is to use a Greenwich Mean Time time zone that includes Almaty or Dhaka (GMT+6).
  • Morocco introduces Daylight Saving Time (DST) on June 1, 2008—In 2008 only, Morocco begins Daylight Saving Time (DST) on June 1, 2008 and ends on September 27, 2008. These changes might affect basic operations of many Cisco products. The workaround for Morocco is to use the Greenwich Mean Time (GMT) time zone that includes Dublin, Edinburgh, London, Lisbon.
  • Australia to implement Daylight Saving Time (DST) changes beginning April 2008—Refer to Australia Daylight Saving Time (DST) Changes for 2008 to Present for more information.
  • United States 'springs forward' this year on the 2nd Sunday in March 2007—Refer to U.S. Daylight Saving Time (DST) Changes for 2007 to Present for more information.
  • Brazil, Chile, and Guatemala to implement DST changes soon. Cisco is evaluating the impact to the Cisco product lines and will publish solutions and workarounds as soon as possible. Check back frequently for updates.

Daylight Saving Time Changes
for 2007 to Present
First Published Last Updated
U.S. Daylight Saving Time (DST) Changes for 2007 to Present

2007 January 23
1800 UTC (GMT)

2010 March 12
2300 UTC (GMT)

Bolivarian Republic of Venezuela Implements a New Time Zone (UTC -4.30) 2007 October 11
1800 UTC (GMT)
2008 April 01
1600 UTC (GMT)
Australia Daylight Saving Time (DST) Changes for 2008 to Present 2008 January 16
2330 UTC (GMT)
2009 October 21
2100 UTC (GMT)
Argentina Daylight Saving Time (DST) Changes for 2007 2008 January 16
2330 UTC (GMT)
2008 January 28
2330 UTC (GMT)
New Zealand Daylight Saving Time (DST) Changes for 2007 2007 August 30
1600 UTC (GMT)
2007 September 28
2200 UTC (GMT)


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Updated: Oct 21, 2009
Document ID: 100709