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Tuesday, March 3, 2015

Data Technical News #2015 - 4
Daylight Savings Begins in March

Markets Impacted:

  • All Markets

Products Impacted:

  • All Nasdaq Data Feeds

Contact Information:

What you need to know:

  • Nasdaq® 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 8, 2015, at 2:00 a.m. ET.
  • In the European Union, Daylight Savings Time (or Summer Time) will begin on Sunday, March 29, 2015, at 1:00 a.m. GMT.

When will Daylight Savings Time begin in 2015?

In the United States, Daylight Savings Time is scheduled to begin on the second Sunday in March. United States clocks should move to Daylight Savings Time on Sunday, March 8, 2015, at 2:00 a.m. ET.

In the European Union, Daylight Savings Time–also known as Summer Time–is scheduled to begin on the last Sunday in March. European clocks should move to Summer Time on Sunday, March 29, 2015, at 1:00 a.m. GMT.

When should I adjust system clocks for Daylight Savings Time?

For the Nasdaq® U.S.-based products, firms should adjust their system clocks to reflect daylight savings time before the start of trading on Monday, March 9, 2015.

For the Nasdaq European-based products, firms should adjust their system clocks to reflect the time change before the start of trading on Monday, March 30, 2015.

How will the different start and end dates for Daylight Savings Time impact the Nasdaq products with international data?


Nasdaq Index Products

On the Nasdaq Global Index Data ServiceSM (GIDSSM), the European index values are calculated during Nasdaq Nordic market hours and the U.S. index values are calculated during The Nasdaq Stock Market® (Nasdaq) hours. Nasdaq 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 distributors will see a one-hour difference in the GIDS transmission schedule for three weeks in the spring and one week in the fall this year.

Nasdaq eSpeed

With the change to U.S. Daylight Time, the eSpeed trading session will open at 7:30 p.m. ET/11:30 p.m. GMT and close at 5:35 p.m. ET/9:35 p.m. GMT (next day).

Where can I find the market hours for each of Nasdaq's markets?

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

Where can I find additional information?

For more information, contact Nasdaq Global Data Products at +1 301 978 5307 (Options #3).

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Nasdaq (Nasdaq: NDAQ) is a leading global provider of trading, clearing, exchange technology, listing, information and public company services. Through its diverse portfolio of solutions, Nasdaq enables customers to plan, optimize and execute their business vision with confidence, using proven technologies that provide transparency and insight for navigating today's global capital markets. As the creator of the world's first electronic stock market, its technology powers more than 90 marketplaces in 50 countries, and 1 in 10 of the world's securities transactions. Nasdaq is home to approximately 3,900 total listings with a market value of approximately $13 trillion. To learn more, visit: business.nasdaq.com.

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