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Notice
February 28, 2020

REQUESTED ACTION

Information Only

CATEGORIES

Information Technology

Markets

Operations

Daylight Saving Time Transition 3/8/20


MESSAGE

Sunday, March 8, 2020 at 02:00 a.m. is the Daylight Saving Time (DST) transition from ST (Standard Time) to DT (Daylight Time). The California ISO is ready to monitor this event and ensure users experience a smooth transition.

 

Please review http://www.caiso.com/Documents/DaylightSavingTimeShortDayInformation.pdf for information on how the transition will occur in the ISO systems.

 

Market Timelines for the Short Day Sunday, March 8, 2020

 

Market Closure

Market Impacted - Day-Ahead Market (DAM), Real-Time Market (RTM)

3/7/2020 10:00 PST

DAM (Bids, Base Schedules, RC Base Schedules) for Trading Day 3/8/2020

3/7/2020 11:00 PST

DAM (Trades) for Trading Day 3/8/2020

3/7/2020 23:45 PST

RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 2:00

3/8/2020 0:15 PST

RTM (Trades) for Hour Ending 2:00

3/8/2020 0:45 PST

RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 4:00

3/8/2020 1:15 PST

RTM (Trades) for Hour Ending 4:00

3/8/2020 1:45 PST

RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 5:00

3/8/2020 3:15 PDT

RTM (Trades) for Hour Ending 5:00

3/8/2020 3:45 PDT

RTM (Bids, Base Schedules, RC Base Schedules) for Hour Ending 6:00

3/8/2020 4:15 PDT

RTM (Trades) for Hour Ending 6:00


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