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March 9, 2021
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REQUESTED ACTION
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CATEGORIES
Information Technology
Markets
Operations |
California ISO to Transition to Daylight Saving Time on 3/14/21 |
MESSAGE
The California ISO will transition from Pacific Standard Time (PST) to Pacific Daylight Time (PDT) on Sunday, March 14, 2021, at 02:00 a.m.
A Daylight Saving Time Short Day Information document is available on the ISO website at http://www.caiso.com/Documents/DaylightSavingTimeShortDayInformation.pdf. The document describes how the transition will occur in its various systems to ensure a smooth transition.
Market Timelines for the Short Day Sunday, March 14, 2021.
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Market Closure
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Market Impacted - Day-Ahead Market (DAM), Real-Time Market (RTM)
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3/13/2021 10:00 PST
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DAM (Bids, Base Schedules, RC Base Schedules) for Trading Day 3/14/2021
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3/13/2021 11:00 PST
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DAM (Trades) for Trading Day 3/14/2021
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3/13/2021 23:45 PST
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 2:00
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3/14/2021 0:15 PST
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RTM (Trades) for Hour Ending 2:00
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3/14/2021 0:45 PST
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 4:00
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3/14/2021 1:15 PST
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RTM (Trades) for Hour Ending 4:00
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3/14/2021 1:45 PST
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 5:00
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3/14/2021 3:15 PDT
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RTM (Trades) for Hour Ending 5:00
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3/14/2021 3:45 PDT
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 6:00
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3/14/2021 4:15 PDT
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RTM (Trades) for Hour Ending 6:00
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CONTACT INFORMATION
ISO Service Desk at (916) 351-2309 or (888) 889-0450, or the RC West Service Desk (for RC West participants only) at (916) 538-5722 or (833) 888-9378
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California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States
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