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October 27, 2021
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REQUESTED ACTION
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CATEGORIES
Information Technology
Markets
Operations |
California ISO to Transition to Standard Time on 11/7/21 |
MESSAGE
Sunday, Nov. 7, 2021 2:00 a.m. is the Daylight Saving Time transition from DT (Daylight Time) to ST (Standard Time). The California ISO is ready to monitor this event and ensure users experience a smooth transition.
Please review the Daylight Saving Time Long Day Information document for information on how the transition will occur in the ISO systems.
Market Timelines for the Long Day Sunday, Nov. 7, 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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11/6/2021 1000 PDT
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DAM (Bids, Base Schedules, RC Base Schedules) for Trading Day 11/7/2021
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11/6/2021 1100 PDT
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DAM (Trades) for Trading Day 11/7/2021
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11/6/2021 2345 PDT
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 0200
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11/6/2021 0015 PDT
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RTM (Trades) for Hour Ending 0200
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11/7/2021 0045 PDT
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 0200* (Second Hour Ending 0200)
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11/7/2021 0115 PDT
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RTM (Trades) for Hour Ending 0200* (Second Hour Ending 0200)
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11/7/2021 0145 PDT
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 0300
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11/7/2021 0115 PST
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RTM (Trades) for Hour Ending 0300
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11/7/2021 0145 PST
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RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 0400
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11/7/2021 0215 PST
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RTM (Trades) for Hour Ending 0400
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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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