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Thursday, February 25, 2010

Data Technical News #2010 - 8
Reminder: Daylight Savings Begins In March

Markets Impacted:

  • All NASDAQ OMX markets in U.S. and Europe

Products Impacted:

  • All NASDAQ OMX Data Feeds

Contact Information:

What you need to know:

  • NASDAQ OMX would like to remind its trading participants and direct data feed subscribers that Daylight Savings Time will begin in March.
    • In the United States, Daylight Savings Time will begin on Sunday, March 14, 2010, at 2:00 a.m., Eastern Time (ET).
    • In the European Union, Daylight Savings Time (or Summer Time) will begin on Sunday, March 28, 2010, at 1:00 a.m., Greenwich Mean Time (GMT).

When will Daylight Savings Time begin in 2010?

In the United States, Daylight Savings Time is scheduled to begin on the second Sunday in March. In 2010, United States clocks should move to Daylight Savings Time on Sunday, March 14, 2010, at 2:00 a.m., Eastern Time (ET).

In the European Union, Daylight Savings Time – also known as Summer Time – is scheduled to begin on the last Sunday in March. In 2010, European clocks should move to Summer Time on Sunday, March 28, 2010, at 1:00 a.m., Greenwich Mean Time (GMT).

When should I adjust system clocks for Daylight Savings Time?

For the NASDAQ OMX U.S.-based products, firms should adjust their system clocks to reflect daylight savings time before the start of trading on Monday, March 15, 2010.

For the NASDAQ OMX European-based products, firms should adjust their system clocks to reflect the time change before the start of trading on Monday, March 29, 2010.

How will the different start and end dates for Daylight Savings Time impact the NASDAQ OMX Global Index Dissemination Service?

On the NASDAQ OMX Global Index Dissemination ServiceSM (GIDSSM), the European index values are calculated during NASDAQ OMX Nordic market hours and the U.S. index values are calculated during The NASDAQ Stock Market® (NASDAQ®) hours. NASDAQ OMX Nordic markets follow Central European Time (CET) standard and NASDAQ follows U.S. Eastern Time. Due to the different start and end dates for Daylight Savings Time in the U.S. and Europe, NASDAQ OMX distributors will see a one-hour difference in the GIDS transmission schedule for two weeks in the spring and one week in the fall each year.

Where can I find the market hours for each of NASDAQ OMX’s markets?

NASDAQ OMXSM posts its system hours on the individual market websites. For convenience, hyperlinks to the trading schedules are listed below:

Where can I find more information?

Please follow Nasdaq on Facebook RSS and Twitter.

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