The California ISO will transition from Pacific Standard Time (PST) to Pacific Daylight Time (PDT) on Sunday, March 10, 2019. 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 and contains information for the following
systems:
- Scheduling Infrastructure Business Rules (SIBR)/Base Schedule Aggregation Portal (BSAP)
- Automated Dispatch System (ADS)
- Customer Market Results Interface (CMRI)
- Open Access Same-Time Information System (OASIS)
- Settlements
- Metering Implications
Schedule and Trade Submission
Market Timelines for the Short Day:
Market Closes
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Market Impacted – Day-Ahead Market (DAM), Real-Time Market (RTM)
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3/9/2019 10:00 PST
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DAM (Bids) for Trading Day 3/10/2019
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3/9/2019 11:00 PST
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DAM (Trades) for Trading Day 3/10/2019
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3/9/2019 23:45 PST
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RTM (Bids) for Hour Ending 2:00
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3/10/2019 0:15 PST
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RTM (Trades) for Hour Ending 2:00
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3/10/2019 0:45 PST
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RTM (Bids) for Hour Ending 4:00
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3/10/2019 1:15 PST
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RTM (Trades) for Hour Ending 4:00
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3/10/2019 1:45 PST
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RTM (Bids) for Hour Ending 5:00
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3/10/2019 3:15 PDT
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RTM (Trades) for Hour Ending 5:00
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3/10/2019 3:45 PDT
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RTM (Bids) for Hour Ending 6:00
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3/10/2019 4:15 PDT
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RTM (Trades) for Hour Ending 6:00
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